Squircle

.btn-squircle {
  display: inline-block;
  padding: 14px 30px;
  border: none;
  border-radius: 22px;
  background: #f43f5e;
  color: #ffffff;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: border-radius 0.25s ease, background 0.2s ease;
}
.btn-squircle:hover {
  border-radius: 14px;
  background: #e11d48;
}
.btn-squircle:active {
  border-radius: 28px;
}