personal-web/loader.css at master · mike623/personal-web · GitHub

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.loader__wrap {
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  display: flex;
  z-index: 1;
  background-color: #2c294f;
}

.loader {
  --sz: 7rem;
  width: calc(var(--sz) * 2);
  height: var(--sz);
  margin: auto;
  display: flex;
  justify-content: space-evenly;
}

.loader__sq {
  --p-sz: calc(var(--sz) / 4);
  --m-offset: calc((var(--p-sz) * -1) * 0.75);
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: space-evenly;
  height: 100%;
  width: 50%;
}
.loader__sq::before, .loader__sq::after {
  width: var(--p-sz);
  height: var(--p-sz);
  content: "";
  position: relative;
  -webkit-transform: translateY(calc((var(--sz) - var(--p-sz)) * -1));
          transform: translateY(calc((var(--sz) - var(--p-sz)) * -1));
  animation: loader-box-bounce 0.5s cubic-bezier(0.3, 0.5, 0.4, 0.95) calc(var(--i) * 0.06s) infinite alternate-reverse;
}
.loader__sq:first-of-type {
  margin-right: var(--m-offset);
}
.loader__sq:first-of-type::before {
  --i: 1;
  border: 3px solid #ff7ab5;
  border-radius: 50%;
}
.loader__sq:first-of-type::after {
  --i: 3;
  background-color: #c643fb;
}
@supports ((-webkit-clip-path: circle()) or (clip-path: circle())) {
  .loader__sq:first-of-type::after {
    -webkit-clip-path: polygon(50% 0%, 100% 100%, 0% 100%);
            clip-path: polygon(50% 0%, 100% 100%, 0% 100%);
  }
}
.loader__sq:nth-of-type(2)::before {
  --i: 2;
  border: 3px solid #ffb650;
}
.loader__sq:nth-of-type(2)::after {
  --i: 4;
  background-color: #2fe2dd;
  border-radius: 50%;
}
@supports ((-webkit-clip-path: circle()) or (clip-path: circle())) {
  .loader__sq:nth-of-type(2)::after {
    border-radius: 0;
    -webkit-clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
            clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
  }
}

@-webkit-keyframes loader-box-bounce {
  to {
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
}

@keyframes loader-box-bounce {
  to {
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
}
*,
*:before,
*:after {
  box-sizing: border-box;
}