Fixed transition of search overlay

_sass/search.scss

@@ -209,7 +209,7 @@
   height: 0;
   background-color: rgba(0, 0, 0, 0.2);
   opacity: 0;
-  transition: opacity ease 200ms;
+  transition: opacity ease 200ms, width 0s 200ms, height 0s 200ms
 }
 
 .search-active {
@@ -237,5 +237,6 @@
     width: 100%;
     height: 100%;
     opacity: 1;
+    transition: opacity ease 200ms, width 0s, height 0s;
   }
 }