make buttons in event display options line up

web/src/components/events/eventContainer.module.scss

@@ -19,6 +19,10 @@
   z-index: 10;
   transition: background-color .5s ease;
 
+  button {
+    margin-bottom: 0;
+  }
+
   button:last-child {
     margin: 0 0 0 auto;
   }