CSS馅饼锭床工人/装载机有透明背景

Question

我只需要使用css和javascript制作一个饼形微调器/加载器。

到目前为止，当背景稳固时，我设法使其工作，因为它不需要看到隐藏半圆的div（不要介意颜色和顶部/左边）：

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.wrapper {
  position: relative;
  background: transparent;
  width: 50px;
  height: 50px;
  background: gray;
}

.wrapper,
.wrapper * {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

.wrapper .pie,
.wrapper * .pie {
  width: 50%;
  height: 100%;
  transform-origin: 100% 50%;
  position: absolute;
  background: red;
}

.wrapper .spinner,
.wrapper * .spinner {
  border-radius: 100% 0 0 100%/50% 0 0 50%;
  z-index: 200;
  border-right: none;
  animation: rota 5s linear infinite
}

.wrapper .filler,
.wrapper * .filler {
  border-radius: 0 100% 100% 0/0 50% 50% 0;
  left: 50%;
  opacity: 0;
  z-index: 100;
  border-left: none;
  background: red;
  animation: opa 5s steps(1, end) infinite reverse
}

.wrapper .mask,
.wrapper * .mask {
  width: 50%;
  height: 100%;
  position: absolute;
  background: inherit;
  opacity: 1;
  z-index: 300;
  animation: opa 5s steps(1, end) infinite
}

.wrapper:hover .spinner,
.wrapper:hover .filler,
.wrapper:hover .mask {
  animation-play-state: running;
}

@-moz-keyframes rota {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@-webkit-keyframes rota {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@-o-keyframes rota {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes rota {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@-moz-keyframes opa {
  0% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

@-webkit-keyframes opa {
  0% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

@-o-keyframes opa {
  0% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

@keyframes opa {
  0% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

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<div class="wrapper">
  <div class="pie spinner"></div>
  <div class="pie filler"></div>
  <div class="mask"></div>
</div>

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问题是，我需要让背景透明，所以我可以看到它，但是然后掩码div变得无用：

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body {
  background-image: url(http://www.publicdomainpictures.net/pictures/20000/velka/tulip-flower-garden.jpg)
}

.wrapper {
  position: relative;
  background: transparent;
  width: 50px;
  height: 50px;
  background: transparent;
}

.wrapper,
.wrapper * {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

.wrapper .pie,
.wrapper * .pie {
  width: 50%;
  height: 100%;
  transform-origin: 100% 50%;
  position: absolute;
  background: red;
}

.wrapper .spinner,
.wrapper * .spinner {
  border-radius: 100% 0 0 100%/50% 0 0 50%;
  z-index: 200;
  border-right: none;
  animation: rota 5s linear infinite
}

.wrapper .filler,
.wrapper * .filler {
  border-radius: 0 100% 100% 0/0 50% 50% 0;
  left: 50%;
  opacity: 0;
  z-index: 100;
  border-left: none;
  background: red;
  animation: opa 5s steps(1, end) infinite reverse
}

.wrapper .mask,
.wrapper * .mask {
  width: 50%;
  height: 100%;
  position: absolute;
  background: inherit;
  opacity: 1;
  z-index: 300;
  animation: opa 5s steps(1, end) infinite
}

.wrapper:hover .spinner,
.wrapper:hover .filler,
.wrapper:hover .mask {
  animation-play-state: running;
}

@-moz-keyframes rota {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@-webkit-keyframes rota {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@-o-keyframes rota {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes rota {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@-moz-keyframes opa {
  0% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

@-webkit-keyframes opa {
  0% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

@-o-keyframes opa {
  0% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

@keyframes opa {
  0% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

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<div class="wrapper">
  <div class="pie spinner"></div>
  <div class="pie filler"></div>
  <div class="mask"></div>
</div>

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有可能实现我想要的吗？怎么样？

Answer 1

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  div.aio-icon:hover.advanced.faceboook {
  border-color: #3b5996;
  background-color: #3b5996;
  }
  div.aio-icon:hover.advanced.twitter {
  border-color: #29c5f6;
  background-color: #29c5f6;
  }
  div.aio-icon:hover.advanced.instagram {
  border-color: #b16c4f;
  background-color: #b16c4f;
  }
  div.aio-icon:hover.advanced.youtube{
  border-color: #f0251d;
  background-color: #f0251d;
  }
 div.aio-icon:hover.advanced.soundcloud{
  border-color: #ff6d00;
  background-color: #ff6d00;
  }

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.wrapper {
  position: relative;
  background: transparent !important; 
  width: 50px;
  height: 50px;
  background: gray;
}

.wrapper,
.wrapper * {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

.wrapper .pie,
.wrapper * .pie {
  width: 50%;
  height: 100%;
  transform-origin: 100% 50%;
  position: absolute;
  background: red;
}

.wrapper .spinner,
.wrapper * .spinner {
  border-radius: 100% 0 0 100%/50% 0 0 50%;
  z-index: 200;
  border-right: none;
  animation: rota 5s linear infinite
}

.wrapper .filler,
.wrapper * .filler {
  border-radius: 0 100% 100% 0/0 50% 50% 0;
  left: 50%;
  opacity: 0;
  z-index: 100;
  border-left: none;
  background: red;
  animation: opa 5s steps(1, end) infinite reverse
}

.wrapper .mask,
.wrapper * .mask {
  width: 50%;
  height: 100%;
  position: absolute;
  background: inherit;
  opacity: 1;
  z-index: 300;
  animation: opa 5s steps(1, end) infinite
}

.wrapper:hover .spinner,
.wrapper:hover .filler,
.wrapper:hover .mask {
  animation-play-state: running;
}

@-moz-keyframes rota {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@-webkit-keyframes rota {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@-o-keyframes rota {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes rota {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@-moz-keyframes opa {
  0% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

@-webkit-keyframes opa {
  0% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

@-o-keyframes opa {
  0% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

@keyframes opa {
  0% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

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添加背景transprent important

<div class="wrapper">
  <div class="pie spinner"></div>
  <div class="pie filler"></div>
  <div class="mask"></div>
</div>