Changes on button stylesheet

src/stylesheets/Lungo.widgets.button.less

@@ -18,10 +18,10 @@ a.button {
 
     background: #5a5a5a;
 
-    font-size: 16px;
+    font-size: 15px;
     text-align: center;
     text-decoration: none;
-    line-height: 42px;
+    line-height: 40px;
 
     outline: none;
     .user-select(none);