.loader {
  width: 40px;
    height: 40px;
    line-height: 120px;
    text-align: center;
    position: absolute;
    top: 50%;
    left: 51%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: 
    radial-gradient(farthest-side,#031892 94%,#0000) top/8px 8px no-repeat,
    conic-gradient(#0000 30%,#031892);
  -webkit-mask: radial-gradient(farthest-side,#0000 calc(100% - 8px),#000 0);
  animation: l13 1s infinite linear;
  /* animation: l13 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite; */
}
@keyframes l13{ 
  100%{transform: rotate(1turn)}
}