Fix trigger icon overflow, close #2109

Author: afc163

Diff for: src/components/GlobalHeader/index.less

@@ -34,6 +34,7 @@
 i.trigger {
   font-size: 20px;
   line-height: 64px;
+  height: 64px;
   cursor: pointer;
   transition: all 0.3s, padding 0s;
   padding: 24px;