/* HTML: <div class="loader"></div> */
.loader {
    display: inline-block;
    width: 30px;
    --b: 8px; 
    aspect-ratio: 1;
    border-radius: 50%;
    padding: 1px;
    background: conic-gradient(#0000 10%,#f03355) content-box;
    -webkit-mask:
      repeating-conic-gradient(#0000 0deg,#000 1deg 20deg,#0000 21deg 36deg),
      radial-gradient(farthest-side,#0000 calc(100% - var(--b) - 1px),#000 calc(100% - var(--b)));
    -webkit-mask-composite: destination-in;
            mask-composite: intersect;
    animation:l4 1s infinite steps(10);
  }
  @keyframes l4 {to{transform: rotate(1turn)}}