Replace loading spinner with a completely new CSS driven spinner - is it doable?

Anvil Q&A
4

Here’s the css you should paste into your theme.css which is just the compiled SCSS from your link.
Plus the first part to disable the default loading spinner gif.


#loadingSpinner {
  background-image: none;
}

div.spinner {
  -moz-animation: rotate 10s infinite linear;
  -webkit-animation: rotate 10s infinite linear;
  animation: rotate 10s infinite linear;
  position: relative;
  display: block;
  margin: auto;
  width: 142px;
  height: 142px;
}
div.spinner i {
  -moz-animation: rotate 3s infinite cubic-bezier(0.09, 0.6, 0.8, 0.03);
  -webkit-animation: rotate 3s infinite cubic-bezier(0.09, 0.6, 0.8, 0.03);
  animation: rotate 3s infinite cubic-bezier(0.09, 0.6, 0.8, 0.03);
  -moz-transform-origin: 50% 100% 0;
  -webkit-transform-origin: 50% 100% 0;
  transform-origin: 50% 100% 0;
  position: absolute;
  display: inline-block;
  top: 50%;
  left: 50%;
  border: solid 6px transparent;
  border-bottom: none;
}
div.spinner i:nth-child(1) {
  -moz-animation-timing-function: cubic-bezier(0.09, 0.3, 0.12, 0.03);
  -webkit-animation-timing-function: cubic-bezier(0.09, 0.3, 0.12, 0.03);
  animation-timing-function: cubic-bezier(0.09, 0.3, 0.12, 0.03);
  width: 44px;
  height: 22px;
  margin-top: -22px;
  margin-left: -22px;
  border-color: #2172b8;
  border-top-left-radius: 36px;
  border-top-right-radius: 36px;
}
div.spinner i:nth-child(2) {
  -moz-animation-timing-function: cubic-bezier(0.09, 0.6, 0.24, 0.03);
  -webkit-animation-timing-function: cubic-bezier(0.09, 0.6, 0.24, 0.03);
  animation-timing-function: cubic-bezier(0.09, 0.6, 0.24, 0.03);
  width: 58px;
  height: 29px;
  margin-top: -29px;
  margin-left: -29px;
  border-color: #18a39b;
  border-top-left-radius: 42px;
  border-top-right-radius: 42px;
}
div.spinner i:nth-child(3) {
  -moz-animation-timing-function: cubic-bezier(0.09, 0.9, 0.36, 0.03);
  -webkit-animation-timing-function: cubic-bezier(0.09, 0.9, 0.36, 0.03);
  animation-timing-function: cubic-bezier(0.09, 0.9, 0.36, 0.03);
  width: 72px;
  height: 36px;
  margin-top: -36px;
  margin-left: -36px;
  border-color: #82c545;
  border-top-left-radius: 48px;
  border-top-right-radius: 48px;
}
div.spinner i:nth-child(4) {
  -moz-animation-timing-function: cubic-bezier(0.09, 1.2, 0.48, 0.03);
  -webkit-animation-timing-function: cubic-bezier(0.09, 1.2, 0.48, 0.03);
  animation-timing-function: cubic-bezier(0.09, 1.2, 0.48, 0.03);
  width: 86px;
  height: 43px;
  margin-top: -43px;
  margin-left: -43px;
  border-color: #f8b739;
  border-top-left-radius: 54px;
  border-top-right-radius: 54px;
}
div.spinner i:nth-child(5) {
  -moz-animation-timing-function: cubic-bezier(0.09, 1.5, 0.6, 0.03);
  -webkit-animation-timing-function: cubic-bezier(0.09, 1.5, 0.6, 0.03);
  animation-timing-function: cubic-bezier(0.09, 1.5, 0.6, 0.03);
  width: 100px;
  height: 50px;
  margin-top: -50px;
  margin-left: -50px;
  border-color: #f06045;
  border-top-left-radius: 60px;
  border-top-right-radius: 60px;
}
div.spinner i:nth-child(6) {
  -moz-animation-timing-function: cubic-bezier(0.09, 1.8, 0.72, 0.03);
  -webkit-animation-timing-function: cubic-bezier(0.09, 1.8, 0.72, 0.03);
  animation-timing-function: cubic-bezier(0.09, 1.8, 0.72, 0.03);
  width: 114px;
  height: 57px;
  margin-top: -57px;
  margin-left: -57px;
  border-color: #ed2861;
  border-top-left-radius: 66px;
  border-top-right-radius: 66px;
}
div.spinner i:nth-child(7) {
  -moz-animation-timing-function: cubic-bezier(0.09, 2.1, 0.84, 0.03);
  -webkit-animation-timing-function: cubic-bezier(0.09, 2.1, 0.84, 0.03);
  animation-timing-function: cubic-bezier(0.09, 2.1, 0.84, 0.03);
  width: 128px;
  height: 64px;
  margin-top: -64px;
  margin-left: -64px;
  border-color: #c12680;
  border-top-left-radius: 72px;
  border-top-right-radius: 72px;
}
div.spinner i:nth-child(8) {
  -moz-animation-timing-function: cubic-bezier(0.09, 2.4, 0.96, 0.03);
  -webkit-animation-timing-function: cubic-bezier(0.09, 2.4, 0.96, 0.03);
  animation-timing-function: cubic-bezier(0.09, 2.4, 0.96, 0.03);
  width: 142px;
  height: 71px;
  margin-top: -71px;
  margin-left: -71px;
  border-color: #5d3191;
  border-top-left-radius: 78px;
  border-top-right-radius: 78px;
}

@-moz-keyframes rotate {
  to {
    -moz-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}
@-webkit-keyframes rotate {
  to {
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}
@keyframes rotate {
  to {
    -moz-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

Then in NativeLibraries (Native Libraries is best because this loads before the app)

<script>
$(document).ready(() => {
    $('#loadingSpinner')
    .addClass('spinner')
    .append($('<i/><i/><i/><i/><i/><i/><i/>'));
})
</script>
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