CSS 剪辑一个图像并将另一个图像作为边框

CSS clip-circle an image and put another image as border

可以在这里找到类似的问题:

但是,我想用图像替换红色轮廓,例如:

我尝试了 :before 和 :after 伪标签,但没有找到解决方案。我应该朝哪个方向看才能实现这一目标?

您可以像这样使用多个背景:

.box {
 width:200px;
 height:210px;
 border-radius: 0 0 50% 50%/0 0 70% 70%;
 background:
  url(https://i.stack.imgur.com/bdZeE.png) center/cover, 
  url(https://i.stack.imgur.com/i7iHM.png) 0 180%/100% auto no-repeat;
 position:relative;
}
.box:after {
  content:"";
  position:absolute;
  z-index:1;
  bottom:0;
  top:50%;
  left:0;
  right:0;
  background:url(https://i.stack.imgur.com/i7iHM.png) 0 90%/100% auto no-repeat;
}
<div class="box">

</div>

您还可以使用CSS变量控制里面的图像:

.box {
 width:200px;
 height:210px;
 border-radius: 0 0 50% 50%/0 0 70% 70%;
 background:
  var(--image) center/cover, 
  url(https://i.stack.imgur.com/i7iHM.png) 0 180%/100% auto no-repeat;
 position:relative;
 display:inline-block;
}
.box:after {
  content:"";
  position:absolute;
  z-index:1;
  bottom:0;
  top:50%;
  left:0;
  right:0;
  background:url(https://i.stack.imgur.com/i7iHM.png) 0 90%/100% auto no-repeat;
}
<div class="box" style="--image:url(https://i.stack.imgur.com/bdZeE.png)">
</div>
<div class="box" style="--image:url(https://i.stack.imgur.com/7A8fP.png)">
</div>