better placeholder, styling

index.html

@@ -49,15 +49,16 @@
         height: 500px;
         text-align: center;
         position: relative;
+        margin: 20px 0;
       }
 
       #map {
+        display: block;
         position: absolute;
         background: #fff;
-        display: block;
         width: 100%;
         height: 100%;
-        margin: 20px 0;
+        margin: 0;
       }
 
       path.state {
@@ -81,8 +82,8 @@
         position: absolute;
         z-index: -1;
         display: block;
-        left: 18px;
-        top: 41px;
+        left: 0;
+        top: 0;
       }
 
     </style>
@@ -129,6 +130,10 @@ <h2>About</h2>
     </div>
     <script>
 
+      if (!document.createElementNS) {
+        document.getElementsByTagName("form")[0].style.display = "none";
+      }
+
       // field definitions from:
       // <http://www.census.gov/popest/data/national/totals/2011/files/NST-EST2011-alldata.pdf>
       var percent = (function() {