css square code example

Example 1: how to make a responsive box in css

.square {
  width: 50%;
}

.square:after {
  content: "";
  display: block;
  padding-bottom: 100%;
}

Example 2: how to create a shape in css

div {
	clip-path: polygon(100% 100%, 100% 100%, 100% 100%)
}