button {
  border-radius: .45rem;
  text-transform: uppercase;
  font-style: normal;
  font-weight: 200;
  padding-left: 25px;
  padding-right: 25px;
  color: #fff;
  -webkit-clip-path: polygon(0 0,0 0,100% 0,100% 0,100% calc(100% - 15px),calc(100% - 15px) 100%,15px 100%,0 100%);
  clip-path: polygon(0 0,0 0,100% 0,100% 0,100% calc(100% - 15px),calc(100% - 15px) 100%,15px 100%,0 100%);
  height: 40px;
  font-size: 0.5rem;
  line-height: 13px;
  letter-spacing: 1.0px;
  transition: .2s .1s;
  background-image: linear-gradient(90deg, #1c1c1c, #20fb62);
  border: 5 solid;
  overflow: hidden;
}

button:hover {
  cursor: pointer;
  transition: all .8s ease-in;
  padding-right: 25px;
  padding-left: 25px;
}