style(common): add display property for English solution columns in navigation

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

@@ -1535,7 +1535,12 @@ body {
 html[lang="en"] .nav-mega__cols--solution {
   gap: 2rem;
   grid-template-columns: repeat(4, minmax(0, 1fr));
-}.nav-mega__col {
+}
+/* 英文解决方案的cols grid */
+html[lang="en"] .nav-mega__cols--solution {
+  display: grid;
+}
+.nav-mega__col {
   display: flex;
   flex-direction: column;
   gap: 2rem;