.button {
  display: inline-block;
  padding: 15px 32px;
  font-size: 17px;
  font-weight: bold;
  color: rgb(0, 0, 0);
  background: transparent;
  border-radius: 50px;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  z-index: 1;
  border-style: solid;
  border: none;
  color: white;
}

.button:before,
.button:after {
  content: "";
  position: absolute;
  top: 0;
  width: 100%;
  height: 100%;
  opacity: 0.3;
  pointer-events: none;
}

.button:before {
  left: 90%;
  background: linear-gradient(130deg, rgb(6, 193, 255), rgb(255, 255, 255), rgba(253, 28, 197, 0.985));
  z-index: -1;
  transition: left 0.3s ease-in-out;
}

.button:hover:before {
  left: 50%;
}

.button:after {
  right: 90%;
  background: linear-gradient(130deg, rgb(6, 193, 255), rgb(255, 255, 255), rgba(253, 28, 197, 0.985));
  z-index: -1;
  transition: right 0.3s ease-in-out;
}

.button:hover:after {
  right: 50%;
}