1button {
2 background-color: #444141;
3 border-radius: 4px;
4 color: #fff;
5 cursor: pointer;
6 padding: 15px 30px;
7 font-size: 18px;
8 font-weight: bold;
9 letter-spacing: 1px;
10 border: none;
11}
12
13button:hover {
14 background-image: linear-gradient(90deg, #53cbef 0%, #dcc66c 50%, #ffa3b6 75%, #53cbef 100%);
15 animation: slidernbw 5s linear infinite;
16 color: #000;
17}
18
19@keyframes slidernbw {
20 to {
21  background-position: 20vw;
22 }
23}