chore: Hide the toolbar when page scroll (#94)

* style: Page scrolling style

* chore: Keep overflow-y-auto

---------

Co-authored-by: Charlie Wang ✨ <18888351756@163.com>

Author: ljt990218

src/styles/app.less

@@ -14,16 +14,11 @@ html.dark {
   color-scheme: dark;
 }
 
-body {
-  overflow: hidden;
-}
-
 #app {
   height: 100vh;
   // Dynamic Viewport Units
   height: 100dvh;
   position: relative;
-  overflow-x: hidden;
 }
 
 ::-webkit-scrollbar {