BackTop 回到顶部

<template>
  <a-back-top />
  Scroll down to see the bottom-right
  <strong style="color: rgba(64, 64, 64, 0.6)">gray</strong>
  button.
</template>

<template>
  <div id="components-back-top-demo-custom">
    <a-back-top>
      <div class="ant-back-top-inner">UP</div>
    </a-back-top>
    Scroll down to see the bottom-right
    <strong style="color: #1088e9">blue</strong>
    button.
  </div>
</template> 
<style scoped>
#components-back-top-demo-custom .ant-back-top {
  bottom: 100px;
}
#components-back-top-demo-custom .ant-back-top-inner {
  height: 40px;
  width: 40px;
  line-height: 40px;
  border-radius: 4px;
  background-color: #1088e9;
  color: #fff;
  text-align: center;
  font-size: 20px;
}
</style>