Added visible close button

src/styles/content/listing.scss

@@ -206,6 +206,23 @@
     z-index: 1;
   }
 
+  .close {
+    position: absolute;
+    top: 5px;
+    right: 5px;
+    z-index: 1;
+    padding: 5px;
+    background-color: colors.$text;
+    color: colors.$background;
+    font-size: 20px;
+    line-height: 20px;
+    width: 20px;
+    height: 20px;
+    text-align: center;
+    display: block;
+    cursor: pointer;
+  }
+
   &.shown {
     opacity: var(--opacity, 1);
     pointer-events: initial;