button {
 display: inline-block;
 position: relative;
 color: #fff;
 font-weight: 500;
 font-size: 14px;
 text-decoration: none;
 text-transform: uppercase;
 padding: 15px 30px;
 text-align: center;
 border: none;
 clip-path: polygon(7% 0, 93% 0, 100% 50%, 93% 100%, 7% 100%, 0 50%);
 background-color: #000000;
 background-image: radial-gradient(200% 70% at center 20%, rgba(48,44,45,1) -30%, rgba(50,46,47,1) 49%, rgba(22,18,19,1) 50%, rgba(22,18,19,1) 150%);
 background-repeat: no-repeat;
 transition: background-position-y ease-in-out 250ms;
}

button:hover {
 background-position-y: -50px;
}

button:active {
 transform: scale(0.99);
}