When selecting filter, deselect events

src/scss/card.scss

@@ -1,6 +1,7 @@
 .event-card {
   box-sizing: border-box;
-  margin: 2px 0;
+  border: 1px solid black;
+  margin: 0;
   padding: 15px;
   transition: 0.2 ease;
   background: $midwhite;