效果:

源码：

<template>
  <ScaleScreen
    class="scale-wrap"
    :selfAdaption="true"
    :autoScale="true"
    :class="{ 'fullscreen-container': isFullScreen }"
  >
    <div class="bg">
      <dv-loading v-if="loading">Loading...</dv-loading>
      <div v-else class="host-body" >
        <!-- 头部 s -->
        <div class="d-flex jc-center title_wrap">
          <div class="zuojuxing"></div>
          <div class="youjuxing"></div>
          <div class="guang"></div>
          <div class="d-flex jc-center">
            <div class="title" @click="fullScreen"