Update masthead.html

Author: felixkoerber

_includes/masthead.html

@@ -3,7 +3,7 @@
 .box_mast {
   background-color: #00618F;
   border-radius: 15px;
-  padding: 20px 10px;
+  padding: 10px 10px;
   display: inline-block;
   margin-bottom: 0;
   line-height: 1;