How to achieve chamfered CSS Border Corners rather than rounded corners?

Question

With the CSS border-radius property I can have a curvy, rounded border corner at the end.

.boxLeft{
             


        

Answer 1

This is what you need, transparency and everything

.left,
.right {
  width: 100px;
  height: 100px;
  float: left;
  position: relative;
  overflow: hidden;
}

.right::after,
.left::after {
  content: '';
  width: 200px;
  height: 200px;
  position: absolute;
  -moz-transform: rotate(45deg);
  -webkit-transform: rotate(45deg);
  -o-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  transform: rotate(45deg);
}

.right::after {
  background: lightblue;
  left: -40px;
  top: -100px;
}

.left::after {
  background: lightpink;
  left: -60px;
  top: -100px;
}