圆形图片（头像）

img{
  width: 34px;
  height: 34px;
  display: flex;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

<img src=<span class="hljs-string">"地址"</span>alt=<span class="hljs-string">""</span>>