Revert "style: center header navigation vertically"

This reverts commit 85e74454914a5ebf7f83b6b52daa35020d948d8b.

src/components/Header.vue

@@ -197,9 +197,11 @@ export default {
 
 #header .header-nav .header-nav-wrapper {
   float: right;
-  height: 80px;
+  height: 50px;
   display: flex;
-  align-items: center;
+  align-items: flex-end;
+  padding-bottom: 15px;
+  box-sizing: border-box;
 }
 
 /* 导航栏 每个导航 */