Circular hole in a <div> [duplicate] - html

Question

This question already has answers here:
Transparent hollow or cut out circle
(7 answers)
Closed 8 years ago.
I am looking for a way to create a square div of relative size, say, 70% x 70% with a background color and a circular hole in it (so that the background can be seen behind it) of the same size so that the sides of the div are tangent.

Answer 1

You could use radial-gradient to achieve this.
html,
body {
height: 100%;
margin: 0;
background: url(http://www.lorempixel.com/600/400) 100% 100%;
}
div {
position: relative;
width: 70%;
height: 70%;
background: -webkit-radial-gradient(50% 50%, circle, transparent 10%, #000 10%);
background: -moz-radial-gradient(50% 50%, circle, transparent 10%, #000 10%);
background: radial-gradient(50% 50%, circle, transparent 10%, #000 10%);
margin: 0 auto;
}
<div></div>
Here's an svg approach.
body {
background: url(http://www.lorempixel.com/600/400/);
background-size: 100% 100%;
margin: 0;
}
<svg viewBox="0 0 400 200" width="400" height="200">
<path d="M0,0 L400,0 L400,200 L0,200z M200,100 m-50,0 a50,50 0 1,0 100,0 a50,50 0 1,0 -100,0z" fill="black" />
</svg>