It's a rectangle inside a shape。
-webkit-clip-path: polygon(0% 0%, 0% 100%, 25% 100%, 25% 25%, 75% 25%, 75% 75%, 25% 75%, 25% 100%, 100% 100%, 100% 0%);
clip-path: polygon(0% 0%, 0% 100%, 25% 100%, 25% 25%, 75% 25%, 75% 75%, 25% 75%, 25% 100%, 100% 100%, 100% 0%);
how can i clip a circle inside?
Use mask instead:
.box {
display: inline-block;
width: 200px;
height: 200px;
background: url(https://picsum.photos/id/100/800/800) center/cover;
-webkit-mask: radial-gradient(circle 40px, #0000 98%, #fff);
mask: radial-gradient(circle 40px, #0000 98%, #fff);
}<div class="box"></div>
<div class="box" style="width:300px;height:300px"></div>You can have it responsive like below:
.box {
display:inline-block;
width:200px;
height:200px;
background:url(https://picsum.photos/id/100/800/800) center/cover;
-webkit-mask:radial-gradient(circle closest-side,#0000 calc(100% - 30px),#fff calc(100% - 32px));
mask:radial-gradient(circle closest-side,#0000 calc(100% - 30px),#fff calc(100% - 32px));
}<div class="box"></div>
<div class="box" style="width:300px;height:300px"></div>You can use a path you draw in svg like so:
img{-webkit-clip-path: url(#clip);;
clip-path: url(#clip);}<img src="https://assets.codepen.io/222579/darwin300.jpg" />
<svg height="0" width="0" class="svg-clip" style="position:absolute">
<defs>
<clipPath id="clip" clipPathUnits="objectBoundingBox">
<path d="M0,0 L1,0 1,1 0,1 0,0M.75,.5A.25,.25 0 1 0 .25,.5A.25,.25 0 1 0 .75,.5z" />
</clipPath>
</defs>
</svg>Please observe that clipPathUnits="objectBoundingBox" and the path's values are between 0 and 1. Also the first part of the path is drawn clockwise while the second path (the hole) is drawn counterclockwise.