perf: 优化布局显示

Author: insistence

ruoyi-fastapi-frontend/src/layout/components/Navbar.vue

@@ -185,6 +185,8 @@ export default {
           width: 30px;
           height: 30px;
           border-radius: 50%;
+          vertical-align: middle;
+          border-style: none;
         }
 
         .user-nickname{