[turbolizer] Style improvements.

tools/turbolizer/turbo-visualizer.css

 .visible-transition {
     transition-delay: 0s;
     transition-duration: 1s;
     transition-property: all;
     transition-timing-function: ease;
 }
 
 .collapse-pane {
     background: #A0A0A0;
     bottom: 0;
@@ skipping 262 matching lines @@
 }
 
 #disassembly-collapse {
     right: 0;
 }
 
 #source-collapse {
     left: 0;
 }
 
-#graph-toolbox {
-    position: relative;
-    top: 1em;
-    left: 0.7em;
-    border: 2px solid #eee8d5;
-    border-radius: 5px;
-    padding: 0.7em;
-    z-index: 5;
-}
-
-#disassembly-collapse {
-    right: 0;
-}
-
-#source-collapse {
-    left: 0;
+#graph-toolbox-anchor {
+    height: 0px;
 }
 
 #graph-toolbox {
     position: relative;
     top: 1em;
     left: 0.7em;
     border: 2px solid #eee8d5;
     border-radius: 5px;
     padding: 0.7em;
     z-index: 5;
+    background: rgba(100%, 100%, 100%, 0.7);
 }
 
 #load-file {
-    background: #A0A0A0;
     position: absolute;
     top: 0;
     right: 0;
     margin-top: 0.5em;
     margin-right: 0.5em;
+    z-index: 5;
+    opacity: 0.7;
+}
+
+#load-file input {
+    background: #A0A0A0;
     border-radius: 5px;
     padding: 0.5em;
-    z-index: 5;
-    opacity: 0.7;
 }
 
 #hidden-file-upload{
     display: none;
 }