DPR2.0&DPR3.0S手機適配問題

就一行程式碼解決問題，解決不了就去……

<template>
   <div>
       這是商家+++頁面
       <div class="box">

       </div>
   </div>
</template>
<script>

</script>
<style lang="scss" scoped>
.box {
    width: 200px;
    height: 200px;
    border
 
: 1px solid #ccc;
    background-image: url('./img/[email protected]');
      //這句是關鍵
    @media (-webkit-min-device-pixel-ratio:3), (min-device-pixel-ratio:3) {
        background-image: url('./img/[email protected]')
    }
    background-repeat: no-repeat;
}
</style>