对应 Arco Dropdown，选项使用浅色悬停背景，默认保留 Element Plus 箭头。 属性用法见 Element Plus 文档。
点击按钮打开菜单，关闭箭头后更接近 Arco 的面板。
<script setup lang="ts">
import { ref } from 'vue'
const command = ref('none')
</script>
<template>
<el-dropdown trigger="click" :show-arrow="false" @command="command = $event">
<el-button>Open menu</el-button>
<template #dropdown>
<el-dropdown-menu>
<el-dropdown-item command="edit">Edit</el-dropdown-item>
<el-dropdown-item command="copy">Copy link</el-dropdown-item>
<el-dropdown-item command="delete" disabled>Delete</el-dropdown-item>
</el-dropdown-menu>
</template>
</el-dropdown>
<el-text>Selected: {{ command }}</el-text>
</template>悬停触发的三档尺寸在 Arco 中没有对应项，按 Element Plus 级差延伸；divided 保留分割线。
<script setup lang="ts">
const sizes = ['small', 'default', 'large'] as const
</script>
<template>
<el-dropdown v-for="size in sizes" :key="size" :size="size">
<el-button :size="size">{{ size }}</el-button>
<template #dropdown>
<el-dropdown-menu><el-dropdown-item>Edit</el-dropdown-item><el-dropdown-item divided>Archive</el-dropdown-item></el-dropdown-menu>
</template>
</el-dropdown>
</template>