Fixes the alignment of 'X' icon

Closes #3372272

css/module_filter.css

@@ -4,15 +4,17 @@
 }
 .winnow-input input.form-search {
   padding-right: 2em;
+  position: relative;
 }
 .winnow-clear {
   position: absolute;
-  top: 0;
   right: 2px;
   bottom: 0;
   left: auto;
   text-align: left;
   text-indent: -9999px;
+  top: 42%;
+  transform: translateY(-50%);
 }
 .winnow-clear::after {
   position: absolute;