diff --git a/client/assets/styles/controls.less b/client/assets/styles/controls.less
index 26adcd50..945e0ea4 100644
--- a/client/assets/styles/controls.less
+++ b/client/assets/styles/controls.less
@@ -7,6 +7,7 @@ aside {
     button {
         width: 100%;
         font-size: 150%;
+        margin: 0;
     }
 
     button.ready:enabled {