效果如下，dialog中内容自行添加
<template>
<div>
<div class=dialog-wrap>
<div class=dialog-cover v-if=isShow click=closeMyself></div>
<transition name=drop>
<div class=dialog-content v-if=isShow>
<p class=dialog-close click=closeMyself>x</p>
<slot>empty</slot>
</div>
</tra
