Remove reduntant scrollbars

assets/css/browser-solidity.css

@@ -134,6 +134,7 @@ body {
     bottom: 0;
     overflow: auto;
     box-sizing: border-box;
+    overflow: hidden;
 }
 
 #header {
@@ -150,7 +151,6 @@ body {
 
 #header #menu {
     border-bottom: 3px solid #F4F6FF;
-    overflow: hidden;
     height: 2em;
     font-size: 1em;
     padding-top: 0.5em;

src/app/analysis-tab.js

@@ -9,6 +9,7 @@ var css = csjs`
   .analysisTabView {
     padding: 2%;
     margin-top: 1em;
+    padding-bottom: 3em;
   }
   .infoBox extends ${styles.infoTextBox} {
     margin-bottom: 1em;

src/universal-dapp.js

@@ -21,6 +21,9 @@ var styleGuide = require('./app/style-guide')
 var styles = styleGuide()
 
 var css = csjs`
+  html {
+    overflow: hidden;
+  }
   .options {
     float: left;
     padding: 0.7em 0.3em;