UX: minor css tweaks

assets/javascripts/discourse/widgets/discourse-post-event.js.es6

@@ -197,7 +197,7 @@ export default createWidget("discourse-post-event", {
               <span class="separator">·</span>
             {{/unless}}
             <span class="creators">
-              <span>{{i18n "discourse_post_event.event_ui.created_by"}}</span>
+              <span class="created-by">{{i18n "discourse_post_event.event_ui.created_by"}}</span>
               {{attach widget="discourse-post-event-creator" attrs=(hash user=state.eventModel.creator)}}
             </span>
           </div>

assets/stylesheets/common/discourse-post-event.scss

@@ -9,6 +9,7 @@
     flex-direction: column;
     flex: 1 0 auto;
     max-width: 100%;
+    box-sizing: border-box;
 
     .widget-dropdown {
       margin: 0;

assets/stylesheets/mobile/discourse-post-event.scss

@@ -16,4 +16,10 @@
     right: -2px;
     bottom: -2px;
   }
+
+  .creators {
+    .created-by {
+      display: none;
+    }
+  }
 }