style(common): 更新头部样式

public/themes/dist_static/static/css/common.css

@@ -1523,8 +1523,8 @@ body {
 }.nav-mega__cols {
   flex: 1;
   min-width: 0;
-  display: grid;
-  grid-template-columns: repeat(4, minmax(0, 1fr));
+  display: flex;
+  /* grid-template-columns: repeat(4, minmax(0, 1fr)); */
   gap: 5rem 2rem;
 }.nav-mega__cols--solution {
   flex: none;