Make the rubric smaller so that we can accomodate more columns.

common/lib/xmodule/xmodule/css/capa/display.scss

@@ -774,16 +774,16 @@ section.problem {
       }
       label,
       .view-only {
-          margin:10px;
+          margin:3px;
           position: relative;
           padding: 15px;
-          width: 200px;
+          width: 150px;
           height:100%;
           display: inline-block;
           min-height: 50px;
           min-width: 50px;
           background-color: #CCC;
-          font-size: 1em;
+          font-size: .9em;
       }
       .grade {
         position: absolute;