Replacing top border on footer

lms/static/sass/shared/_footer.scss

@@ -5,7 +5,7 @@
 
 .wrapper-footer {
   box-shadow: 0 -1px 5px 0 $shadow-l1;
-  border-top: 1px solid tint($m-gray,50%);
+  border-top: 1px solid tint($m-gray, 50%);
   padding: 25px ($baseline/2) ($baseline*1.5) ($baseline/2);
   background: $footer-bg;
   clear: both;
@@ -297,7 +297,6 @@ $edx-footer-bg-color: rgb(252,252,252);
 
   // NOTE: resetting older footer styles - can be removed once not needed
   box-shadow: none;
-  border-top: none;
   padding: ($baseline*2) $baseline;
 
   // about