implement top bar more elegantly

Fixes a bug causing it to overlap with the leaderboard on some mobilephones

static/site.css

@@ -9,7 +9,6 @@ body{
 }
 
 .top-bar{
-    position: fixed;
     background-color: orange;
     padding-bottom: 10px;
     padding-top: 10px;
@@ -18,16 +17,14 @@ body{
     left: 0;
     top: 0;
     right: 0;
+
+    overflow:auto;
 }
 
 .top-button{
-    height: 80%;
     float: left;
-    
     margin-right: 10px;
-    
     background-color: red;
-
     font-weight: bold;
     color: #583535;
 }
@@ -58,7 +55,6 @@ body{
 @media(max-width: 800px){
     .top-bar{
         /* bar will be scrolled aways */
-        position: absolute;
         min-width: 250px;
         padding-bottom: 4vw;
         padding-top: 2vw;
@@ -118,7 +114,7 @@ body{
 
 /* #################### LEADERBOARDS ##################### */
 .leaderboard-container{
-    margin-top: 60px;
+    margin-top: 10px;
     margin-bottom: 50px;
     margin-left: auto;
     margin-right: auto;
@@ -166,10 +162,6 @@ body{
     .leaderboard-container{
         font-size: 4.5vw;
         width: 100%;
-        
-        /* deal with absolute nav-header */
-        margin-top: 30vw;
-
     }
     
     .colum-names{