Padding and border changes in search completion. (#8527)

Author: isoos

pkg/web_css/lib/src/_search.scss

@@ -112,7 +112,8 @@
   appearance: none;
   width: 25ex;
   border: 1px solid #000;
-  border-radius: 5px;
+  border-radius: 0 0 5px 5px;
+  box-shadow: 1px 1px 4px rgba(0, 0, 0, 0.33);
   max-height: 20em;
   background: var(--pub-searchbar_suggest-background-color);
   color: var(--pub-searchbar_suggest-text-color);
@@ -123,7 +124,7 @@
   >.completion-option {
     cursor: pointer;
     white-space: nowrap;
-    padding: 1px 4px;
+    padding: 4px 8px;
 
     &:hover {
       background-color: var(--pub-searchbar_suggest_hover-background-color);