.button {
  font-size: 16px;
  font-weight: 700;
  color: #292930;
  background: #ffdc60;
  height: 60px;
  line-height: 60px;
  text-align: center;
  padding: 0 50px;
  position: relative;
  z-index: 1;
  overflow: hidden;
  border-radius: 10px;
  text-transform: capitalize;
  cursor: pointer;
  border: none;
  box-shadow: 0px 0px 77px 12px rgba(0,0,0,0.13);
  -webkit-box-shadow: 0px 0px 77px 12px rgba(0,0,0,0.13);
  -moz-box-shadow: 0px 0px 77px 12px rgba(0,0,0,0.13);
}

button:before, button:after {
  content: "";
  background: #5956e9;
  height: 50%;
  width: 0;
  position: absolute;
  transition: .3s cubic-bezier(.785,.135,.15,.86);
  -webkit-transition: .3s cubic-bezier(.785,.135,.15,.86);
  z-index: -1;
}

button::before {
  top: 0;
  left: 0;
  right: auto;
}

button:after {
  bottom: 0;
  right: 0;
  left: auto;
}

button:hover {
  color: #fff;
  background-color: #57c9da;
}

button:hover:before {
  width: 100%;
  right: 0;
  left: auto;
}

button:hover::after {
  width: 100%;
  left: 0;
  right: auto;
}