fix: aside style error caused by banner (#2572)

Co-authored-by: Divyansh Singh <[email protected]>

Author: heygsc

.vitepress/theme/components/VueMasteryBanner.vue

@@ -279,22 +279,7 @@ onMounted(() => {
 </style>
 
 <style>
-html.vuemastery-menu-fixed .VPNav {
-  top: 70px;
-}
-
-html.vuemastery-menu-fixed {
-  scroll-padding-top: 134px;
-  overflow: auto;
-}
-
 html.vuemastery-menu-fixed {
-  margin-top: 72px;
-}
-
-@media (max-width: 960px) {
-  html.vuemastery-menu-fixed .VPNav {
-    top: 0;
-  }
+  --vt-banner-height: 70px;
 }
 </style>