feat: several improvements in layout

assets/styles/components/menu.css

@@ -1,9 +1,9 @@
 .menu--main {
-    @apply lg:flex lg:items-center m-0;
+    @apply flex items-center m-0;
 }
 
 .menu--main a {
-    @apply block p-4 text-black hover:bg-zinc-400 hover:text-zinc-800;
+    @apply block p-2 md:p-4 text-black hover:bg-zinc-400 hover:text-zinc-800 text-sm md:text-base;
 }
 
 .menu--main .current a {