# 弹出框
# 基本用法
<r-popover>
<r-button>上方弹出</r-button>
<template slot="content">
弹出内容
</template>
</r-popover>
<r-popover position="bottom">
<r-button>下方弹出</r-button>
<template slot="content">
弹出内容
</template>
</r-popover>
<r-popover position="left">
<r-button>左边弹出</r-button>
<template slot="content">
弹出内容
</template>
</r-popover>
<r-popover position="right">
<r-button>右边弹出</r-button>
<template slot="content">
弹出内容
</template>
</r-popover>
# 触发方式
<r-popover trigger="hover">
<r-button>上方弹出</r-button>
<template slot="content">
弹出内容
</template>
</r-popover>
<r-popover position="bottom" trigger="hover">
<r-button>下方弹出</r-button>
<template slot="content">
弹出内容
</template>
</r-popover>
<r-popover position="left" trigger="hover">
<r-button>左边弹出</r-button>
<template slot="content">
弹出内容
</template>
</r-popover>
<r-popover position="right" trigger="hover">
<r-button>右边弹出</r-button>
<template slot="content">
弹出内容
</template>
</r-popover>