.custom-btn {
  width: 220px;
  height: 50px;
  display: flex;
  align-items: center;
  align-content: center;
  justify-content: center;
  position: relative;
  z-index: 9;
  border: 1px solid #5BA50E;
  gap: 10px;
  text-decoration: none;
  background-color: #5BA50E;
}

.custom-btn::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-clip-path: polygon(0 0, 100% 0, 0 0, 0 100%);
  clip-path: polygon(0 0, 100% 0, 0 0, 0 100%);
  z-index: -1;
  background-color: #fff;
  top: 0;
  left: 0;
  opacity: 0;
}

.custom-btn span {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
}

.custom-btn:hover::after {
  animation: sideClip 0.5s linear;
  -webkit-clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  opacity: 1;
}

.custom-btn:hover span {
  animation: storm 0.4s linear both;
  color: #5BA50E;
}

@keyframes sideClip {
  0% {
    clip-path: polygon(0 0, 100% 0, 0 0, 0 100%);
  }

  50% {
    clip-path: polygon(0 0, 100% 0, 0 100%, 0 100%);
  }

  100% {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  }
}

@keyframes storm {
  0% {
    transform: translate3d(0, 0, 0) translateZ(0);
  }

  25% {
    transform: translate3d(4px, 0, 0) translateZ(0);
  }

  50% {
    transform: translate3d(-3px, 0, 0) translateZ(0);
  }

  75% {
    transform: translate3d(2px, 0, 0) translateZ(0);
  }

  100% {
    transform: translate3d(0, 0, 0) translateZ(0);
  }
}