Dev: Improve features style

doc/Tool_Api.md

@@ -85,7 +85,7 @@ Clear infos.
 
 ### add
 
-Add infos.
+Add info.
 
 |Name   |Type  |Desc        |
 |-------|------|------------|
@@ -147,4 +147,10 @@ snippets.remove('hello');
 
 ## Features
 
+Browser feature detections, thanks to 
+[modernizr](https://github.com/Modernizr/Modernizr) project.
+
+Red means unsupported, otherwise ok. All buttons is linked directly to 
+related materials in [Can I Use](http://caniuse.com/) website.
+
 ## Settings

src/Features/Features.scss

@@ -3,10 +3,11 @@
 
 .dev-tools { .tools {
     .features {
-        @include overflow-auto(y);
+        padding-bottom: 40px;
         ul {
+            @include overflow-auto(y);
             @include clear-float();
-            margin-top: 5px;
+            height: 100%;
             li {
                 width: 33.3%;
                 float: left;
@@ -36,10 +37,15 @@
             }
         }
         .html5test {
+            position: absolute;
+            left: 0;
+            bottom: 0;
             color: #fff;
+            width: 100%;
             background: $blue;
             display: block;
-            padding: 10px;
+            height: 40px;
+            line-height: 40px;
             text-decoration: none;
             text-align: center;
             margin-top: 10px;