1.loader {
2  width: fit-content;
3  font-weight: bold;
4  font-family: monospace;
5  font-size: 30px;
6  background: radial-gradient(circle closest-side,#000 94%,#0000) right/calc(200% - 1em) 100%;
7  animation: l24 1s infinite alternate linear;
8}
9
10.loader::before {
11  content: "Loading...";
12  line-height: 1em;
13  color: #0000;
14  background: inherit;
15  background-image: radial-gradient(circle closest-side,#fff 94%,#000);
16  -webkit-background-clip: text;
17  background-clip: text;
18}
19
20@keyframes l24 {
21  100% {
22    background-position: left
23  }
24}