.donate {
  position: relative;
  text-decoration: none;
  display: inline-block;
  padding-left: 5rem;
  line-height: 3rem;
}
.donate:before,
.donate:after {
  content: "";
  display: block;
  width: 2rem;
  height: 3rem;
  position: absolute;
  left: 2rem;
  top: 0;
  background-color: #a74752;
  border-radius: 5rem 5rem 0 0;
}
.donate:before {
  transform: rotate(-45deg);
  transform-origin: 0 100%;
}
.donate:after {
  left: 0;
  transform: rotate(45deg);
  transform-origin: 100% 100%;
}