<div id="background"> <div id="son"> </div> </div>
在css中
#background{ background-image: url("../assets/下载.png"); background-color: black; width: 100vw; height: 100vh; position: relative; } #son{ position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); }
这样即可实现垂直居中
