fix: main l/r borders

layouts/default.vue

@@ -39,7 +39,7 @@
           </slot>
         </div>
       </aside>
-      <div class="w-full sm:w-600px min-h-screen" border="none sm:l sm:r base">
+      <div class="w-full sm:w-600px min-h-screen sm:border-l sm:border-r border-base">
         <div min-h="[calc(100vh-3.5rem)]" sm:min-h-screen>
           <slot />
         </div>