Color-Mix CSS Loader | Learning Axis

HTML

CSS

body {
  background: #0e0f0e;
  display: grid;
  place-items: center;
  height: 100vh;
  margin: 0;
}
.holder {
  position: relative;
  transform: rotate(45deg);
  border: 1.5px solid #fff;
  width: 120px;
  height: 120px;
  isolation: isolate;
  box-shadow: 0 0 2px 2px rgba(0,0,0,0.125),
    inset 0 0 1px 1px rgba(0,0,0,0.125);
  animation: holderStep 1.85s linear infinite alternate;
  animation-timing-function: cubic-bezier(0.65, 0, 0.35, 1);
}
#b1, #b2, #b3, #b4 {
  position: absolute;
  width: 60px;
  height: 60px;
  opacity: 0.85;
}
#b1 {
  top: 3.75px;
  left: 3.75px;
  animation: m1 1s .75s linear infinite alternate,
    colorShift 4s 1s linear infinite;
}
#b2 {
  top: 3.75px;
  right: 3.75px;
  animation: m2 1s 1.75s linear infinite alternate,
    colorShift 4s 2s linear infinite;
}
#b4 {
  bottom: 3.75px;
  right: 3.75px;
  animation: m4 1s 2.75s linear infinite alternate,
    colorShift 4s 3s linear infinite;
}
#b3 {
  bottom: 3.75px;
  left: 3.75px;
  animation: m3 1s 3.75s linear infinite alternate,
    colorShift 4s 4s linear infinite;
}
@keyframes holderStep {
  0% { transform: rotate(45deg); }
  100% { transform: rotate(-90deg); }
}
@keyframes m1 { to { top: 31.25px; left: 31.25px; } }
@keyframes m2 { to { top: 31.25px; right: 31.25px; } }
@keyframes m3 { to { bottom: 31.25px; left: 31.25px; } }
@keyframes m4 { to { bottom: 31.25px; right: 31.25px; } }
@keyframes colorShift {
  0% { background: color-mix(in srgb, #f07 60%, #fff 25%); }
  50% { background: color-mix(in srgb, #07f 60%, #fff 25%); }
  100% { background: color-mix(in srgb, #0c6 60%, #fff 25%); }
}