Кнопка-гармошка

/* From Uiverse.io by adamgiebl */ 
button {
  transform: rotate(-25deg) skew(25deg);
  transform-style: preserve-3d;
  position: relative;
  list-style: none;
  width: 100px;
  height: 32px;
  border: none;
  background: transparent;
  font-family: inherit;
  cursor: pointer;
}

button:before {
  content: '';
  position: absolute;
  bottom: -10px;
  left: -5px;
  width: 100%;
  height: 10px;
  background: #2a2a2a;
  transform: skewX(-41deg);
}

button:after {
  content: '';
  position: absolute;
  top: 5px;
  left: -9px;
  width: 9px;
  height: 100%;
  background: #2a2a2a;
  transform: skewY(-49deg);
}

button span {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #2a2a2a;
  color: #fff;
  font-size: 25px;
  transition: 1.1s ease-out;
}

button:hover span {
  z-index: 1000;
  transition: .3s;
  color: #fff;
}

button:hover span:nth-child(5) {
  transform: translate(40px, -40px);
  opacity: 1;
}

button:hover span:nth-child(4) {
  transform: translate(30px, -30px);
  opacity: .8;
}

button:hover span:nth-child(3) {
  transform: translate(20px, -20px);
  opacity: .6;
}

button:hover span:nth-child(2) {
  transform: translate(10px, -10px);
  opacity: .4;
}

button:hover span:nth-child(1) {
  transform: translate(0px, 0px);
  opacity: .2;
}

button:active span:nth-child(5) {
  transform: translate(20px, -20px);
  opacity: 1;
}

button:active span:nth-child(4) {
  transform: translate(15px, -15px);
}

button:active span:nth-child(3) {
  transform: translate(10px, -10px);
}

button:active span:nth-child(2) {
  transform: translate(5px, -5px);
}

button:active span:nth-child(1) {
  transform: translate(0px, 0px);
}

button:nth-child(1):hover span {
  background: #52E19F;
}