Shortened first column for controls

static/css/application.css

@@ -3822,13 +3822,14 @@ section.tool-wrapper div#controlls-container div.graph-controls {
   -webkit-box-shadow: 0 1px 0 #083e4b;
   -moz-box-shadow: 0 1px 0 #083e4b;
   box-shadow: 0 1px 0 #083e4b; }
-section.tool-wrapper div#controlls-container div.graph-controls div.music-wrapper, section.tool-wrapper div#controlls-container div.graph-controls div.inputs-wrapper {
-  float: left;
-  width: 47.207%; }
 section.tool-wrapper div#controlls-container div.graph-controls div.music-wrapper {
-  margin-right: 5.587%; }
+  margin-right: 5.587%;
+  width: 29.609%;
+  float: left; }
 section.tool-wrapper div#controlls-container div.graph-controls div.inputs-wrapper {
-  padding-top: 11.326px; }
+  padding-top: 11.326px;
+  width: 64.804%;
+  float: left; }
 section.tool-wrapper div#controlls-container div.graph-controls select#musicTypeSelect {
   display: block;
   margin-bottom: 11.326px;

templates/sass/courseware/_amplifier.scss

@@ -35,17 +35,16 @@ section.tool-wrapper {
       @include box-shadow(0 1px 0 lighten(#073642, 2%));
       @extend .clearfix;
 
-      div.music-wrapper, div.inputs-wrapper {
-        float: left;
-        width: flex-grid(2.25, 4.5);
-      }
-
       div.music-wrapper {
         margin-right: flex-gutter(4.5);
+        width: flex-grid(1.5, 4.5);
+        float: left;
       }
 
       div.inputs-wrapper {
         padding-top: lh(.5);
+        width: flex-grid(3, 4.5);
+        float: left;
       }
 
       select#musicTypeSelect {