优化垂直导航栏样式

src/styles/custom.scss

@@ -6,21 +6,15 @@
 
 html.v-overlay-scroll-blocked {
   position: fixed;
+  position: relative;
+
+  --v-body-scroll-y: 0px !important;
 }
 
-/* 防止Chrome移动端下拉刷新干扰 */
 body {
   overscroll-behavior: none;
 }
 
-@media (width <= 768px){
-  html.v-overlay-scroll-blocked {
-    position: relative;
-
-    --v-body-scroll-y: 0px !important;
-  }
-}
-
 @mixin hide-scrollbar {
   -ms-overflow-style: none;
   scrollbar-width: none;