/* HTML: <div class="loader"></div> */
.loader {
  width: fit-content;
  font-family: cooperh;
  font-size: 15px;
  background: radial-gradient(circle closest-side,red 94%,#0000) right/calc(200% - 1em) 100%;
  animation: l24 1s infinite alternate linear;
}
.loader::before {
  content: "THINKING...";
  line-height: 1em;
  color: #0000;
  background: inherit;
  background-image: radial-gradient(circle closest-side,#fff 94%,#000);
  -webkit-background-clip:text;
          background-clip:text;
}

@keyframes l24{
  100%{background-position: left}
}