feat: parallax 小玩意

.vitepress/theme/index.js

@@ -4,6 +4,7 @@ import { h, watch } from 'vue'
 import DefaultTheme from 'vitepress/theme-without-fonts'
 import Download from '../../components/Download.vue'
 import Bilibili from '../../components/Bilibili.vue'
+import Parallax from '../../components/Parallax.vue'
 import './style.css'
 import './rainbow.css'
 
@@ -20,6 +21,7 @@ export default {
     DefaultTheme.enhanceApp(ctx)
     ctx.app.component('Download', Download)
     ctx.app.component('Bilibili', Bilibili)
+    ctx.app.component('Parallax', Parallax)
     if (typeof window === 'undefined')
       return