Fix HeaderSearch error

src/components/HeaderSearch/index.js

@@ -27,7 +27,7 @@ export default class HeaderSearch extends PureComponent {
   enterSearchMode = () => {
     this.setState({ searchMode: true }, () => {
       if (this.state.searchMode) {
-        this.input.refs.input.focus();
+        this.input.focus();
       }
     });
   }

src/layouts/BasicLayout.less

@@ -66,8 +66,12 @@
       background: rgba(0, 0, 0, .04);
     }
   }
-  .search:hover {
-    background: transparent;
+  .search {
+    padding: 0;
+    margin: 0 12px;
+    &:hover {
+      background: transparent;
+    }
   }
   .account {
     .avatar {