style: Add elNamespace

feat(component): Add namespace of class

src/components/Screenfull/src/Screenfull.vue

@@ -2,6 +2,11 @@
 import { Icon } from '@/components/Icon'
 import { useFullscreen } from '@vueuse/core'
 import { propTypes } from '@/utils/propTypes'
+import { useDesign } from '@/hooks/web/useDesign'
+
+const { getPrefixCls } = useDesign()
+
+const prefixCls = getPrefixCls('screenfull')
 
 defineProps({
   color: propTypes.string.def('')
@@ -15,7 +20,7 @@ const toggleFullscreen = () => {
 </script>
 
 <template>
-  <div @click="toggleFullscreen">
+  <div :class="prefixCls" @click="toggleFullscreen">
     <Icon
       :size="18"
       :icon="isFullscreen ? 'zmdi:fullscreen-exit' : 'zmdi:fullscreen'"