.pic{
background: url(img/gongyupic.jpg);
background-repeat: no-repeat;
background-position: 0px 0px;
height: 40px;
width: 40px;
}
</style>
<div class="pic"></div>
</style>
<div class="pic"></div>
https://www.bilibili.com/video/BV1k8411575T/?vd_source=d68ed178f151e80fea1e02efd205802c