add about page, multiple UI tweaks

21 files changed, 152 insertions, 30 deletions

diff --git a/app/assets/css/styles.css b/app/assets/css/styles.css
index 8528bb8..e0a723f 100644
--- a/app/assets/css/styles.css
+++ b/app/assets/css/styles.css
@@ -1,4 +1,4 @@
 html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,embed,figure,figcaption,footer,header,hgroup,menu,nav,output,ruby,section,summary,time,mark,audio,video{margin:0;padding:0;border:0;font:inherit;font-size:100%;vertical-align:baseline}html{line-height:1}ol,ul{list-style:none}table{border-collapse:collapse;border-spacing:0}caption,th,td{text-align:left;font-weight:normal;vertical-align:middle}q,blockquote{quotes:none}q:before,q:after,blockquote:before,blockquote:after{content:"";content:none}a img{border:none}article,aside,details,figcaption,figure,footer,header,hgroup,main,menu,nav,section,summary{display:block}/*!
  *  Font Awesome 4.5.0 by @davegandy - http://fontawesome.io - @fontawesome
  *  License - http://fontawesome.io/license (Font: SIL OFL 1.1, CSS: MIT License)
- */@font-face{font-family:'FontAwesome';src:url("../fonts/fontawesome-webfont.eot?v=4.5.0");src:url("../fonts/fontawesome-webfont.eot?#iefix&v=4.5.0") format("embedded-opentype"),url("../fonts/fontawesome-webfont.woff2?v=4.5.0") format("woff2"),url("../fonts/fontawesome-webfont.woff?v=4.5.0") format("woff"),url("../fonts/fontawesome-webfont.ttf?v=4.5.0") format("truetype"),url("../fonts/fontawesome-webfont.svg?v=4.5.0#fontawesomeregular") format("svg");font-weight:normal;font-style:normal}.fa{display:inline-block;font:normal normal normal 14px/1 FontAwesome;font-size:inherit;text-rendering:auto;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.fa-lg{font-size:1.33333em;line-height:0.75em;vertical-align:-15%}.fa-2x{font-size:2em}.fa-3x{font-size:3em}.fa-4x{font-size:4em}.fa-5x{font-size:5em}.fa-fw{width:1.28571em;text-align:center}.fa-ul{padding-left:0;margin-left:2.14286em;list-style-type:none}.fa-ul>li{position:relative}.fa-li{position:absolute;left:-2.14286em;width:2.14286em;top:0.14286em;text-align:center}.fa-li.fa-lg{left:-1.85714em}.fa-border{padding:.2em .25em .15em;border:solid 0.08em #eee;border-radius:.1em}.fa-pull-left{float:left}.fa-pull-right{float:right}.fa.fa-pull-left{margin-right:.3em}.fa.fa-pull-right{margin-left:.3em}.pull-right{float:right}.pull-left{float:left}.fa.pull-left{margin-right:.3em}.fa.pull-right{margin-left:.3em}.fa-spin{-webkit-animation:fa-spin 2s infinite linear;animation:fa-spin 2s infinite linear}.fa-pulse{-webkit-animation:fa-spin 1s infinite steps(8);animation:fa-spin 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1)}.fa-flip-vertical{filter:progid:DXImageTransform.Microsoft.BasicImage(rotation=2);-webkit-transform:scale(1, -1);-ms-transform:scale(1, -1);transform:scale(1, -1)}:root .fa-rotate-90,:root .fa-rotate-180,:root .fa-rotate-270,:root .fa-flip-horizontal,:root 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#dedede;padding:10px}nav{font-size:17px;background-color:#fff;padding:15px}nav .nav-container{width:1000px;margin:auto}nav .about{float:right;line-height:2;margin-left:18px}.plan{padding-bottom:30px;overflow:auto;height:100%;min-height:550px;width:100%}.plan ul{display:flex;padding-top:12px;position:relative;margin:auto;transition:all 0.5s;margin-top:-5px}.plan ul ul::before{content:'';position:absolute;top:0;left:50%;border-left:2px solid #c4c4c4;height:12px;width:0}.plan ul li{float:left;text-align:center;list-style-type:none;position:relative;padding:12px 3px 0 3px;transition:all 0.5s}.plan ul li:before,.plan ul li:after{content:'';position:absolute;top:0;right:50%;border-top:2px solid #c4c4c4;width:50%;height:12px}.plan ul li:after{right:auto;left:50%;border-left:2px solid #c4c4c4}.plan ul li:only-child{padding-top:0}.plan ul li:only-child:after,.plan ul li:only-child:before{display:none}.plan ul li:first-child::before,.plan ul li:last-child::after{border:0 none}.plan ul li:last-child::before{border-right:2px solid #c4c4c4;border-radius:0 6px 0 0}.plan ul li:first-child::after{border-radius:6px 0 0 0}.plan ul li .plan-node:hover+ul::before{border-color:#00B5E2}.plan ul li .plan-node:hover+ul li::after,.plan ul li .plan-node:hover+ul li::before,.plan ul li .plan-node:hover+ul ul::before{border-color:#008CAF}.plan-stats{display:flex;font-size:13px;margin:0 auto 10px auto;padding-bottom:10px;border-bottom:1px solid #dedede;border-radius:12px;width:650px;position:relative}.plan-stats div{padding-right:10px;flex-grow:1}.plan-stats .stat-value{display:block;text-align:center;font-size:17px}.plan-stats .stat-label{display:block;text-align:center;font-size:12px}.plan-stats:after{content:'';position:absolute;top:100%;left:50%;margin-left:-9px;width:0;height:0;border-top:solid 9px #dedede;border-left:solid 9px transparent;border-right:solid 9px transparent}.plan-stats .btn-close{padding:6px;background-color:transparent;font-size:17px;text-align:center;margin-left:6px;cursor:pointer;border:0}.plan-node{text-decoration:none;color:#4d525a;display:inline-block;transition:all 0.1s;position:relative;padding:6px 10px;background-color:#fff;font-size:12px;border:1px solid #dedede;margin-bottom:4px;border-radius:3px;overflow-wrap:break-word;word-wrap:break-word;word-break:break-all;width:220px;box-shadow:1px 1px 3px 0px rgba(0,0,0,0.1)}.plan-node header{margin-bottom:6px;overflow:hidden;cursor:pointer}.plan-node header:hover{background-color:#f7f7f7}.plan-node header h4{font-size:13px;float:left;font-weight:600}.plan-node header .node-duration{float:right;margin-left:10px;font-size:13px}.plan-node .prop-list{float:left;text-align:left;overflow-wrap:break-word;word-wrap:break-word;word-break:break-all;margin-top:10px;margin-bottom:6px}.plan-node .relation-name{text-align:left}.plan-node .planner-estimate{border-top:1px solid #dedede;text-align:left;padding-top:3px;margin-top:6px;width:100%}.plan-node .tags{margin-top:6px;text-align:left}.plan-node .tags span{display:inline-block;background-color:#FB4418;color:#fff;font-size:10px;font-weight:600;margin-right:3px;padding:3px;border-radius:3px;line-height:1.1}.plan-node:hover{border-color:#00B5E2}.plan-node .node-description{text-align:left;font-style:italic;padding-top:10px;word-break:normal}.plan-node .node-description .node-type{font-weight:600;background-color:#00B5E2;color:#fff;padding:0 6px}.plan-node .btn-default{border:0}.node-bar-container{height:5px;margin-top:10px;border:1px solid #dedede;border-radius:3px;color:#fff;background-color:#454545;position:relative}.node-bar-container .node-bar{height:100%;text-align:left;position:absolute;left:0;top:0}.node-bar-label{text-align:left;display:block}.expanded{width:400px}.menu{width:190px;height:200px;position:absolute;font-size:12px;top:115px;left:0;background-color:#777;box-shadow:1px 1px 2px 1px rgba(0,0,0,0.2);color:#fff;border-top-right-radius:3px;border-bottom-right-radius:3px;z-index:1}.menu header h3{padding-top:10px;margin-bottom:20px;font-size:16px;font-weight:600;line-height:2;text-align:right;padding-right:20px}.menu ul{margin-left:10px}.menu ul li{line-height:2.5}.menu-toggle{font-size:26px;float:left;padding-left:10px;line-height:2;cursor:pointer}.menu-hidden{width:50px;height:50px;border-top-right-radius:50%;border-bottom-right-radius:50%}.menu-hidden ul,.menu-hidden h3{visibility:hidden}.menu button{border:1px solid #fff;background-color:#544D4D;color:#fff;padding:2px;border-radius:3px}.page,.page-stretch{padding-top:10px;margin:auto;width:1000px;min-height:600px}.page em,.page-stretch em{font-style:italic}.page-content h2{font-size:26px;line-height:2}.page-content h3{font-size:22px;margin-top:18px;line-height:2}.page-content p,.page-content ul{font-size:16px;line-height:1.5;margin-bottom:18px}.page-content ul{list-style-type:disc;position:relative;left:18px}.page-stretch{margin:auto;width:95%}.page-stretch h2{text-align:left;font-size:17px;max-width:1000px;margin:auto}.page-stretch h2 .sub-title{font-size:13px;font-style:italic}.table{width:100%}.table td{border-bottom:1px solid #dedede;padding:6px}.table tr:hover{background-color:#f7f7f7}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1040;background-color:#000;opacity:0.7}.modal{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1050}.modal .modal-dialog{position:relative;transform:translate(0);margin:30px auto;width:500px;opacity:1}.modal .modal-dialog .modal-content{padding:30px;position:relative;background-color:#fff;background-clip:padding-box;border:1px solid #999;border:1px solid rgba(0,0,0,0.2);border-radius:6px;outline:0;box-shadow:0 3px 9px rgba(0,0,0,0.5);display:block}.modal .modal-dialog .modal-content .modal-body{padding:3px}.modal .modal-dialog .modal-content .modal-footer{text-align:right}.modal .modal-dialog .modal-content .modal-footer button{margin-left:3px}footer{border-top:2px solid #dedede;margin:20px;padding:20px;color:#ababab;text-align:center;width:600px;margin:auto}footer .fa{font-size:17px;margin-left:6px}.plan-query-container{border:1px solid #dedede;padding:18px;background-color:#fff;position:absolute;box-shadow:0px 0px 10px 2px rgba(0,0,0,0.3);border-radius:3px;margin-bottom:18px;z-index:6;left:0}.plan-query-container code{font-weight:300}.plan-query-container .plan-query-text{background-color:#fff;font-family:"source code pro";text-align:left}.plan-query-container .plan-query-text .code-key-item{background-color:#F8E400;font-weight:600;padding:1px}.plan-query-container h3{font-size:17px;width:93%;text-align:left;border-bottom:1px solid #dedede;padding-bottom:6px;margin-bottom:10px}.hljs,.hljs-subst{color:#4d525a}.hljs-keyword,.hljs-attribute,.hljs-selector-tag,.hljs-meta-keyword,.hljs-doctag,.hljs-name{color:#008CAF;font-weight:bold}.hljs-built_in,.hljs-literal,.hljs-bullet,.hljs-code,.hljs-addition{color:#008CAF;font-weight:bold}.hljs-regexp,.hljs-symbol,.hljs-variable,.hljs-template-variable,.hljs-link,.hljs-selector-attr,.hljs-selector-pseudo{color:#008CAF;font-weight:bold}.hljs-type,.hljs-string,.hljs-number,.hljs-selector-id,.hljs-selector-class,.hljs-quote,.hljs-template-tag,.hljs-deletion{color:#279404;font-weight:600}.hljs-title,.hljs-section{color:#008CAF;font-weight:bold}.hljs-comment{color:#999ea7;font-style:italic}.hljs-meta{color:#999ea7}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:600}
diff --git a/app/assets/sass/_buttons.scss b/app/assets/sass/_buttons.scss
index 082372d..747b1f7 100644
--- a/app/assets/sass/_buttons.scss
+++ b/app/assets/sass/_buttons.scss
@@ -61,6 +61,7 @@
      @extend .btn-slim;
      border-radius: 50%;
      box-shadow: 0;
+     line-height: 1.5;
      border: 1px solid $line-color;
      background-color: #fff;
  }
diff --git a/app/assets/sass/_common.scss b/app/assets/sass/_common.scss
index 647e9d9..6dde80b 100644
--- a/app/assets/sass/_common.scss
+++ b/app/assets/sass/_common.scss
@@ -52,8 +52,36 @@ a {
    cursor: pointer;
 }
 
-
 code {
    font-family: $font-family-mono;
    font-weight: 600;
 }
+
+.pad-left {
+   margin-left: $padding-lg;
+}
+
+.pad-top {
+   margin-top: $padding-lg;
+}
+
+[tooltip]:before {
+    width: 150px;
+    text-transform: none;
+    text-align: left;
+    content: attr(tooltip);
+    position: absolute;
+    opacity: 0;
+    transition: all 0.15s ease;
+    padding: $padding-lg;
+    color: #fff;
+    border-radius: $border-radius-lg;
+    margin-top: -10px;
+    margin-left: 20px;
+    z-index: 5;
+}
+
+[tooltip]:hover:before {
+    opacity: 1;
+    background: $dark-blue;
+}
diff --git a/app/assets/sass/_forms.scss b/app/assets/sass/_forms.scss
index 4ab4dfe..48ed407 100644
--- a/app/assets/sass/_forms.scss
+++ b/app/assets/sass/_forms.scss
@@ -21,7 +21,7 @@
   }
 
     &-lg {
-      width: 100%;
+      width: 98%;
       height: 280px;
       margin-bottom: $padding-base;
       margin-bottom: $padding-lg;
diff --git a/app/assets/sass/_highlight.scss b/app/assets/sass/_highlight.scss
index 08009db..e7c4ac8 100644
--- a/app/assets/sass/_highlight.scss
+++ b/app/assets/sass/_highlight.scss
@@ -6,13 +6,13 @@
    box-shadow: 0px 0px 10px 2px rgba(0,0,0,0.3);
    border-radius: $border-radius-base;
    margin-bottom: $padding-xl;
-   z-index: 4;
+   z-index: 6;
    left: 0;
 
    code {
       font-weight: 300;
    }
-   
+
    .plan-query-text {
       background-color: #fff;
       font-family: $font-family-mono;
diff --git a/app/assets/sass/_menu.scss b/app/assets/sass/_menu.scss
index f70c74d..e740726 100644
--- a/app/assets/sass/_menu.scss
+++ b/app/assets/sass/_menu.scss
@@ -9,12 +9,11 @@ $menu-toggle-height: 45px;
    top: $menu-offset - 5;
    left: 0;
    background-color: $gray-dark;
-   box-shadow: 1px 1px 2px 1px rgba(0,0,0,0.5);
+   box-shadow: 1px 1px 2px 1px rgba(0,0,0,0.2);
    color: #fff;
    border-top-right-radius: $border-radius-base;
    border-bottom-right-radius: $border-radius-base;
    z-index: 1;
-   // transition: all 0.3s;
 
    header {
       h3 {
diff --git a/app/assets/sass/_nav.scss b/app/assets/sass/_nav.scss
index 496213b..8c86ef7 100644
--- a/app/assets/sass/_nav.scss
+++ b/app/assets/sass/_nav.scss
@@ -7,4 +7,10 @@ nav {
     width: $page-width;
     margin: auto;
   }
+
+  .about {
+     float: right;
+     line-height: 2;
+     margin-left: $padding-xl;
+ }
 }
diff --git a/app/assets/sass/_page.scss b/app/assets/sass/_page.scss
index 6c4e87b..f236f3f 100644
--- a/app/assets/sass/_page.scss
+++ b/app/assets/sass/_page.scss
@@ -4,10 +4,33 @@
   width: $page-width;
   min-height: 600px;
 
+   em {
+      font-style: italic;
+   }
+}
+
+.page-content {
     h2 {
       font-size: round($font-size-base * 2);
-      margin-bottom: $padding-base;
+      line-height: 2;
     }
+    h3 {
+      font-size: round($font-size-base * 1.7);
+      margin-top: $padding-xl;
+      line-height: 2;
+   }
+
+   p, ul {
+      font-size: round($font-size-base * 1.2);
+      line-height: 1.5;
+      margin-bottom: $padding-xl;
+   }
+
+   ul {
+      list-style-type: disc;
+      position: relative;
+      left: $padding-xl;
+   }
 }
 
 .page-stretch {
diff --git a/app/assets/sass/_plan-node.scss b/app/assets/sass/_plan-node.scss
index 0ac65ea..e063d5f 100644
--- a/app/assets/sass/_plan-node.scss
+++ b/app/assets/sass/_plan-node.scss
@@ -2,7 +2,7 @@
    text-decoration: none;
    color: $text-color;
    display: inline-block;
-   transition: all 0.5s;
+   transition: all 0.1s;
    position: relative;
    padding: $padding-base $padding-lg;
 	background-color: #fff;
@@ -13,7 +13,7 @@
    overflow-wrap: break-word;
    word-wrap: break-word;
    word-break: break-all;
-   min-width: 220px;
+   width: 220px;
    box-shadow: 1px 1px 3px 0px rgba(0,0,0,0.1);
 
    header {
@@ -53,9 +53,9 @@
    }
 
    .planner-estimate {
-     float: left;
-   	clear: both;
+      border-top: 1px solid $line-color;
    	text-align: left;
+      padding-top: $padding-sm;
    	margin-top: $padding-base;
    	width: 100%;
    }
@@ -95,14 +95,15 @@
          padding: 0 $padding-base;
       }
    }
+
+   .btn-default {
+      border: 0;
+   }
 }
 
 .node-bar-container {
-   float: left;
    height: 5px;
-   margin-top: $padding-base;
-   margin-left: auto;
-   margin-right: auto;
+   margin-top: $padding-lg;
    border: 1px solid $line-color;
    border-radius: $border-radius-base;
    color: #fff;
diff --git a/app/assets/sass/_plan.scss b/app/assets/sass/_plan.scss
index 74ac4b7..eca3d60 100644
--- a/app/assets/sass/_plan.scss
+++ b/app/assets/sass/_plan.scss
@@ -119,4 +119,15 @@ $connector-line: 2px solid darken($line-color, 10%);
       border-left: solid $triangle-size transparent;
       border-right: solid $triangle-size transparent;
    }
+
+   .btn-close {
+      padding: $padding-base;
+      background-color: transparent;
+      font-size: $font-size-lg;
+      text-align: center;
+      @extend .text-muted;
+      margin-left: $padding-base;
+      cursor: pointer;
+      border: 0;
+   }
 }
diff --git a/app/assets/sass/_variables.scss b/app/assets/sass/_variables.scss
index aa17332..3a02de8 100644
--- a/app/assets/sass/_variables.scss
+++ b/app/assets/sass/_variables.scss
@@ -40,7 +40,7 @@ $text-color: #4d525a;
 $text-color-light: lighten($text-color, 30%);
 
 $line-color: $gray-light;
-$line-color-light: lighten($gray-light, 20%);
+$line-color-light: lighten($gray-light, 10%);
 
 $link-color: $blue;
 
diff --git a/app/assets/styles.css b/app/assets/styles.css
index 8528bb8..e0a723f 100644
--- a/app/assets/styles.css
+++ b/app/assets/styles.css
@@ -1,4 +1,4 @@
 html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,embed,figure,figcaption,footer,header,hgroup,menu,nav,output,ruby,section,summary,time,mark,audio,video{margin:0;padding:0;border:0;font:inherit;font-size:100%;vertical-align:baseline}html{line-height:1}ol,ul{list-style:none}table{border-collapse:collapse;border-spacing:0}caption,th,td{text-align:left;font-weight:normal;vertical-align:middle}q,blockquote{quotes:none}q:before,q:after,blockquote:before,blockquote:after{content:"";content:none}a img{border:none}article,aside,details,figcaption,figure,footer,header,hgroup,main,menu,nav,section,summary{display:block}/*!
  *  Font Awesome 4.5.0 by @davegandy - http://fontawesome.io - @fontawesome
  *  License - http://fontawesome.io/license (Font: SIL OFL 1.1, CSS: MIT License)
- */@font-face{font-family:'FontAwesome';src:url("../fonts/fontawesome-webfont.eot?v=4.5.0");src:url("../fonts/fontawesome-webfont.eot?#iefix&v=4.5.0") format("embedded-opentype"),url("../fonts/fontawesome-webfont.woff2?v=4.5.0") format("woff2"),url("../fonts/fontawesome-webfont.woff?v=4.5.0") format("woff"),url("../fonts/fontawesome-webfont.ttf?v=4.5.0") format("truetype"),url("../fonts/fontawesome-webfont.svg?v=4.5.0#fontawesomeregular") format("svg");font-weight:normal;font-style:normal}.fa{display:inline-block;font:normal normal normal 14px/1 FontAwesome;font-size:inherit;text-rendering:auto;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.fa-lg{font-size:1.33333em;line-height:0.75em;vertical-align:-15%}.fa-2x{font-size:2em}.fa-3x{font-size:3em}.fa-4x{font-size:4em}.fa-5x{font-size:5em}.fa-fw{width:1.28571em;text-align:center}.fa-ul{padding-left:0;margin-left:2.14286em;list-style-type:none}.fa-ul>li{position:relative}.fa-li{position:absolute;left:-2.14286em;width:2.14286em;top:0.14286em;text-align:center}.fa-li.fa-lg{left:-1.85714em}.fa-border{padding:.2em .25em .15em;border:solid 0.08em #eee;border-radius:.1em}.fa-pull-left{float:left}.fa-pull-right{float:right}.fa.fa-pull-left{margin-right:.3em}.fa.fa-pull-right{margin-left:.3em}.pull-right{float:right}.pull-left{float:left}.fa.pull-left{margin-right:.3em}.fa.pull-right{margin-left:.3em}.fa-spin{-webkit-animation:fa-spin 2s infinite linear;animation:fa-spin 2s infinite linear}.fa-pulse{-webkit-animation:fa-spin 1s infinite steps(8);animation:fa-spin 1s infinite steps(8)}@-webkit-keyframes fa-spin{0%{-webkit-transform:rotate(0deg);transform:rotate(0deg)}100%{-webkit-transform:rotate(359deg);transform:rotate(359deg)}}@keyframes fa-spin{0%{-webkit-transform:rotate(0deg);transform:rotate(0deg)}100%{-webkit-transform:rotate(359deg);transform:rotate(359deg)}}.fa-rotate-90{filter:progid:DXImageTransform.Microsoft.BasicImage(rotation=1);-webkit-transform:rotate(90deg);-ms-transform:rotate(90deg);transform:rotate(90deg)}.fa-rotate-180{filter:progid:DXImageTransform.Microsoft.BasicImage(rotation=2);-webkit-transform:rotate(180deg);-ms-transform:rotate(180deg);transform:rotate(180deg)}.fa-rotate-270{filter:progid:DXImageTransform.Microsoft.BasicImage(rotation=3);-webkit-transform:rotate(270deg);-ms-transform:rotate(270deg);transform:rotate(270deg)}.fa-flip-horizontal{filter:progid:DXImageTransform.Microsoft.BasicImage(rotation=0);-webkit-transform:scale(-1, 1);-ms-transform:scale(-1, 1);transform:scale(-1, 1)}.fa-flip-vertical{filter:progid:DXImageTransform.Microsoft.BasicImage(rotation=2);-webkit-transform:scale(1, -1);-ms-transform:scale(1, -1);transform:scale(1, -1)}:root .fa-rotate-90,:root .fa-rotate-180,:root .fa-rotate-270,:root .fa-flip-horizontal,:root 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#dedede;padding:10px}nav{font-size:17px;background-color:#fff;padding:15px}nav .nav-container{width:1000px;margin:auto}nav .about{float:right;line-height:2;margin-left:18px}.plan{padding-bottom:30px;overflow:auto;height:100%;min-height:550px;width:100%}.plan ul{display:flex;padding-top:12px;position:relative;margin:auto;transition:all 0.5s;margin-top:-5px}.plan ul ul::before{content:'';position:absolute;top:0;left:50%;border-left:2px solid #c4c4c4;height:12px;width:0}.plan ul li{float:left;text-align:center;list-style-type:none;position:relative;padding:12px 3px 0 3px;transition:all 0.5s}.plan ul li:before,.plan ul li:after{content:'';position:absolute;top:0;right:50%;border-top:2px solid #c4c4c4;width:50%;height:12px}.plan ul li:after{right:auto;left:50%;border-left:2px solid #c4c4c4}.plan ul li:only-child{padding-top:0}.plan ul li:only-child:after,.plan ul li:only-child:before{display:none}.plan ul li:first-child::before,.plan ul li:last-child::after{border:0 none}.plan ul 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#dedede;text-align:left;padding-top:3px;margin-top:6px;width:100%}.plan-node .tags{margin-top:6px;text-align:left}.plan-node .tags span{display:inline-block;background-color:#FB4418;color:#fff;font-size:10px;font-weight:600;margin-right:3px;padding:3px;border-radius:3px;line-height:1.1}.plan-node:hover{border-color:#00B5E2}.plan-node .node-description{text-align:left;font-style:italic;padding-top:10px;word-break:normal}.plan-node .node-description .node-type{font-weight:600;background-color:#00B5E2;color:#fff;padding:0 6px}.plan-node .btn-default{border:0}.node-bar-container{height:5px;margin-top:10px;border:1px solid #dedede;border-radius:3px;color:#fff;background-color:#454545;position:relative}.node-bar-container .node-bar{height:100%;text-align:left;position:absolute;left:0;top:0}.node-bar-label{text-align:left;display:block}.expanded{width:400px}.menu{width:190px;height:200px;position:absolute;font-size:12px;top:115px;left:0;background-color:#777;box-shadow:1px 1px 2px 1px 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.modal-dialog .modal-content .modal-footer button{margin-left:3px}footer{border-top:2px solid #dedede;margin:20px;padding:20px;color:#ababab;text-align:center;width:600px;margin:auto}footer .fa{font-size:17px;margin-left:6px}.plan-query-container{border:1px solid #dedede;padding:18px;background-color:#fff;position:absolute;box-shadow:0px 0px 10px 2px rgba(0,0,0,0.3);border-radius:3px;margin-bottom:18px;z-index:6;left:0}.plan-query-container code{font-weight:300}.plan-query-container .plan-query-text{background-color:#fff;font-family:"source code pro";text-align:left}.plan-query-container .plan-query-text .code-key-item{background-color:#F8E400;font-weight:600;padding:1px}.plan-query-container h3{font-size:17px;width:93%;text-align:left;border-bottom:1px solid 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diff --git a/app/components/about/about.html b/app/components/about/about.html
new file mode 100644
index 0000000..08c913b
--- /dev/null
+++ b/app/components/about/about.html
@@ -0,0 +1,41 @@
+<div class="page page-content">
+   <h2>Postgres EXPLAIN Visualizer (Pev)</h2>
+   <p>
+      Pev is designed to make <a href="http://www.postgresql.org/docs/current/static/sql-explain.html">
+      Postgres query plans</a> easier to grok. It displays a plan as a tree, with each node representing a step that takes in a row set
+      and produces another. Pev can show you a number of useful things:</p>
+      <ul>
+         <li>overall plan stats</li>
+         <li>individual node stats (duration, row size, cost)</li>
+         <li>explanation of what each node does</li>
+         <li>outlier nodes</li>
+         <li>graph of a specific metric (like cost) for all nodes</li>
+         <li>for some nodes, highlighted part of the query which corresponds to the node</li>
+      </ul>
+
+   <p>You can tweak display options using the menu on the right.</p>
+
+   <h3>Usage tips</h3>
+   <p>Pev currently accepts only JSON formatted plans. In fact, the get the most out of it,
+      I recommend generating a query plan using the following line:
+      <code>EXPLAIN (ANALYZE, COSTS, VERBOSE, BUFFERS, FORMAT JSON)</code>. I also recommend submitting a (decently formatted)
+      SQL query that generated the plan. Doing so will make Pev more useful.
+   </p>
+
+   <p>Pev will remember the plans you analyzed. They are stored locally and are not submitted to me. This is good
+   because no one but you will see your queries. It's also bad because you can't share them with others.</p>
+
+   <h3>Acknowledgements</h3>
+   <p>Pev was inspired and heavily influenced by the excellent <a href="http://explain.depesz.com/">explain.depesz.com</a>. Both the
+      tool and the corresponding help files are a great resource to learn about Postgres and its planner.
+   </p>
+
+   <h3>Help me improve Pev</h3>
+   <p>If you want to help, there are multiple ways to contribute:</p>
+   <ul>
+      <li>give me your plans - I need more test cases for the layout</li>
+      <li>add descriptions for missing node types (especially ones from newer versions of Postgres)</li>
+      <li>contribute to the code on <a href="https://github.com/AlexTatiyants/pev">github</a></li>
+   </ul>
+
+</div>
diff --git a/app/components/about/about.ts b/app/components/about/about.ts
new file mode 100644
index 0000000..64777fc
--- /dev/null
+++ b/app/components/about/about.ts
@@ -0,0 +1,7 @@
+import {Component} from 'angular2/core';
+
+@Component({
+    selector: 'about',
+    templateUrl: './components/about/about.html'
+})
+export class About {}
diff --git a/app/components/app/app.html b/app/components/app/app.html
index b87937f..8d5072b 100644
--- a/app/components/app/app.html
+++ b/app/components/app/app.html
@@ -1,6 +1,7 @@
 <nav>
    <div class="nav-container">
-      <a class="btn btn-primary btn-lg pull-right" [routerLink]="['/PlanNew']">new plan</a>
+      <a class="about"[routerLink]="['About']">about</a>
+      <a class="btn btn-primary btn-lg pull-right" [routerLink]="['PlanNew']">new plan</a>
       <a [routerLink]="['PlanList']">plans</a>
    </div>
 </nav>
diff --git a/app/components/app/app.ts b/app/components/app/app.ts
index f9c83e0..1b78861 100644
--- a/app/components/app/app.ts
+++ b/app/components/app/app.ts
@@ -4,6 +4,7 @@ import {RouteConfig, ROUTER_DIRECTIVES} from 'angular2/router';
 import {PlanView} from '../plan-view/plan-view';
 import {PlanList} from '../plan-list/plan-list';
 import {PlanNew} from '../plan-new/plan-new';
+import {About} from '../about/about';
 
 @Component({
     selector: 'app',
@@ -16,7 +17,8 @@ import {PlanNew} from '../plan-new/plan-new';
     { path: '/', redirectTo: ['/PlanList'] },
     { path: '/plans', component: PlanList, name: 'PlanList' },
     { path: '/plans/new', component: PlanNew, name: 'PlanNew' },
-    { path: '/plans/:id', component: PlanView, name: 'PlanView' }
+    { path: '/plans/:id', component: PlanView, name: 'PlanView' },
+    { path: '/about', component: About, name: 'About'}
 ])
 
 export class App { }
diff --git a/app/components/plan-new/plan-new.html b/app/components/plan-new/plan-new.html
index ba65d99..ee2565e 100644
--- a/app/components/plan-new/plan-new.html
+++ b/app/components/plan-new/plan-new.html
@@ -2,7 +2,7 @@
    <span class="text-muted">For best results, use EXPLAIN (ANALYZE, COSTS, VERBOSE, BUFFERS, FORMAT JSON)</span>
   <div>
     <input placeholder="name (optional)" class="input-box input-box-main" type="text" [(ngModel)]="newPlanName">
-    <button class="btn btn-primary btn-lg pull-right" (click)="submitPlan()">submit</button>
+    <button class="btn btn-default btn-lg pad-top pull-right" (click)="submitPlan()">submit</button>
   </div>
 
   <textarea placeholder="paste execution plan" class="input-box input-box-lg" [(ngModel)]="newPlanContent"></textarea>
diff --git a/app/components/plan-node/plan-node.html b/app/components/plan-node/plan-node.html
index 08a7a96..fdc2c89 100644
--- a/app/components/plan-node/plan-node.html
+++ b/app/components/plan-node/plan-node.html
@@ -1,5 +1,5 @@
 <div class="plan-node" [class.expanded]="showDetails">
-   <header (click)="showDetails = !showDetails">
+   <header (click)="showDetails = !showDetails" tooltip="view node details">
       <h4>{{node[_planService.NODE_TYPE_PROP] | uppercase}}
       </h4>
       <span class="node-duration">{{duration}}<span class="text-muted">{{durationUnit}} | </span>
@@ -7,11 +7,12 @@
       </span>
    </header>
 
-   <div class="relation-name" *ngIf="node[_planService.RELATION_NAME_PROP]">
-      <button *ngIf="plan.formattedQuery" class="btn btn-sm btn-default btn-slim pull-right" (click)="showQuery = !showQuery">
-         <i class="fa fa-database"></i>
-      </button>
+   <button *ngIf="plan.formattedQuery" tooltip="view corresponding query"
+      class="btn btn-sm btn-default btn-slim pull-right" (click)="showQuery = !showQuery">
+      <i class="fa fa-database"></i>
+   </button>
 
+   <div class="relation-name" *ngIf="node[_planService.RELATION_NAME_PROP]">
       <span class="text-muted">on </span>
       <span *ngIf="node[_planService.SCHEMA_PROP]">{{node[_planService.SCHEMA_PROP]}}.</span>{{node[_planService.RELATION_NAME_PROP]}}
       <span *ngIf="node[_planService.ALIAS_PROP]"> ({{node[_planService.ALIAS_PROP]}})</span>
@@ -31,7 +32,7 @@
    </div>
 
    <div *ngIf="currentHighlightType !== highlightTypes.NONE">
-      <div class="node-bar-container" [style.width]="(MAX_WIDTH+3)+'px'">
+      <div class="node-bar-container" [style.width]="(MAX_WIDTH)+'px'">
          <span class="node-bar" [style.width]="width+'px'" [style.backgroundColor]="backgroundColor"></span>
       </div>
       <span class="node-bar-label">
diff --git a/app/components/plan-node/plan-node.ts b/app/components/plan-node/plan-node.ts
index fc865b8..2f3164e 100644
--- a/app/components/plan-node/plan-node.ts
+++ b/app/components/plan-node/plan-node.ts
@@ -66,7 +66,6 @@ export class PlanNode {
     }
 
     ngDoCheck() {
-        //   console.log("check", this.currentHighlightType, this.viewOptions.highlightType);
         if (this.currentHighlightType !== this.viewOptions.highlightType) {
             this.currentHighlightType = this.viewOptions.highlightType;
             this.calculateBar();
@@ -78,6 +77,7 @@ export class PlanNode {
       keyItems.push(this.node[this._planService.SCHEMA_PROP] + '.' + this.node[this._planService.RELATION_NAME_PROP]);
       keyItems.push(' ' + this.node[this._planService.RELATION_NAME_PROP] + ' ');
       keyItems.push(' ' + this.node[this._planService.ALIAS_PROP] + ' ');
+      keyItems.push(this.node[this._planService.GROUP_KEY_PROP]);
       return this._syntaxHighlightService.highlightKeyItems(this.plan.formattedQuery, keyItems);
     }
 
diff --git a/app/components/plan-view/plan-view.html b/app/components/plan-view/plan-view.html
index c63c4d1..268bdac 100644
--- a/app/components/plan-view/plan-view.html
+++ b/app/components/plan-view/plan-view.html
@@ -55,6 +55,7 @@
          <span class="stat-value">{{plan.planStats.maxCost | number:'.0-2'}}</span>
          <span class="stat-label">costliest node</span>
       </div>
+      <div class="btn-close" (click)="viewOptions.showPlanStats = false"><i class="fa fa-close"></i></div>
    </div>
 
    <div class="plan">
diff --git a/app/services/help-service.ts b/app/services/help-service.ts
index 11bb4c0..8859c24 100644
--- a/app/services/help-service.ts
+++ b/app/services/help-service.ts
@@ -10,7 +10,7 @@ export var NODE_DESCRIPTIONS = {
    "LIMIT":"returns a specified number of rows from a record set.",
    "SORT": "sorts a record set based on the specified sort key.",
    "NESTED LOOP": `merges two record sets by looping through every record in the first set and
-   tries to find a match in the second set. All matching records are returned.`,
+   trying to find a match in the second set. All matching records are returned.`,
    "MERGE JOIN": `merges two record sets by first sorting them on a <strong>join key</strong>.`,
    "AGGREGATE": `groups records together based on a GROUP BY or aggregate function (like <code>sum()</code>).`,
    "HASHAGGREGATE": `groups records together based on a GROUP BY or aggregate function (like sum()). Hash Aggregate uses
@@ -21,7 +21,7 @@ export var NODE_DESCRIPTIONS = {
    read the index and another to read the actual value from the table.`,
    "INDEX ONLY SCAN": `finds relevant records based on an <strong>Index</strong>. Index Only Scans perform a single read operation
    from the index and do not read from the corresponding table.`,
-   "BITMAP HEAP SCAN": "scans all pages returned by the <strong>Bitmap Index Scan</strong> for relevant rows.",
+   "BITMAP HEAP SCAN": "searches through the pages returned by the <strong>Bitmap Index Scan</strong> for relevant rows.",
    "BITMAP INDEX SCAN": `uses a <strong>Bitmap Index</strong> (index which uses 1 bit per page) to find all relevant pages.
    Results of this node are fed to the <strong>Bitmap Heap Scan</strong>.`
 }