背景图像在动画结束时未在Internet Explorer中显示

Question

我已经在这上面尝试了一些东西，比如把svg换成png，我盯着我的格式，看不出有什么问题，我没有提出任何问题。我想知道CSS动画是否会以某种方式干扰它？

这是在其他浏览器上工作的website，在it 11上，这个圆圈在动画的末尾仍然是一个黄色圆圈。

​

#rosette {
  z-index: 99;
  position: absolute;
  background-color: crimson;
  height: 100vh;
  width: 100vw;
  animation: rosette-anim 5s;
  animation-fill-mode: forwards;
  content: "";
  transform-style: preserve-3d;
  background: rgb(51, 55, 56);
  top: 0px;
  right: 0px;
  transform: rotateY(0.5turn);
}

@keyframes rosette-anim {
  95% {
    position: absolute;
    background: rgb(51, 55, 56);
    height: 137px;
    width: 142px;
    border-radius: 70px;
    transform: rotateY(2turn);
    top: 4px;
    right: 20px;
  }
  100% {
    position: absolute;
    height: 137px;
    width: 142px;
    border-radius: 70px;
    transform: rotateY(3turn);
    background: rgb(164, 132, 60) url('https://www.pottertour.co.uk/imagesAwards/lux-life-award-transparent-min.svg');
    background-size: 139px 100px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    z-index: 1;
    top: 4px;
    right: 26px;
  }
}

<div id="rosette"></div>

​

Answer 1

伪元素的动画和过渡是not supported by IE11。您可以创建<div>并使用ID为其编写CSS，避免使用伪。示例代码如下：

​

#rosette {
  z-index: 99;
  position: absolute;
  background-color: crimson;
  height: 100vh;
  width: 100vw;
  animation: rosette-anim 5s;
  animation-fill-mode: forwards;
  content: "";
  transform-style: preserve-3d;
  background: rgb(51, 55, 56);
  top: 0px;
  right: 0px;
  transform: rotateY(0.5turn);
}

@keyframes rosette-anim {
  95% {
    position: absolute;
    background: rgb(51, 55, 56);
    height: 137px;
    width: 142px;
    border-radius: 70px;
    transform: rotateY(2turn);
    top: 4px;
    right: 20px;
  }
  100% {
    position: absolute;
    height: 137px;
    width: 142px;
    border-radius: 70px;
    transform: rotateY(3turn);
    background: rgb(164, 132, 60);
    background-size: 139px 100px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    z-index: 1;
    top: 4px;
    right: 26px;
  }
}

#before {
  content: '';
  position: absolute;
  border-bottom: 90px solid rgb(164, 132, 60);
  border-left: 50px solid transparent;
  border-right: 50px solid transparent;
  top: 95px;
  right: 80px;
  transform: translateZ(-1px) rotate(-140deg);
  opacity: 0;
  z-index: -1;
  animation: change 5s;
  animation-fill-mode: forwards;
}

#after {
  content: '';
  position: absolute;
  border-bottom: 90px solid rgb(164, 132, 60);
  border-left: 50px solid transparent;
  border-right: 50px solid transparent;
  top: 95px;
  left: auto;
  right: 10px;
  transform: translateZ(-1px) rotate(140deg);
  opacity: 0;
  z-index: -1;
  animation: change 5s;
  animation-fill-mode: forwards;
}

@keyframes change {
  99% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

<div id="rosette"><img src="https://www.pottertour.co.uk/imagesAwards/lux-life-award-transparent-min.svg" id="award" alt="My private Harry Potter tours won Lux Life magazine&#39;s award for best pop culture tour Edinburgh, they anointed it &#39;Truly magical&#39;, bless them."
  /></div>
<div id="before"></div>
<div id="after"></div>

​

结果为IE11：

​

​

Answer 2

我为背景图像使用了::before伪元素，并为动画::before元素编写了另一个关键帧动画。这在IE11中有效。

​

#rosette {
  z-index: 99;
  position: absolute;
  background-color: crimson;
  height: 100vh;
  width: 100vw;
  animation: rosette-anim 5s;
  animation-fill-mode: forwards;
  transform-style: preserve-3d;
  background: rgb(51, 55, 56);
  top: 0px;
  right: 0px;
  transform: rotateY(0.5turn);
}

#rosette:before {
  content: "";
  background-image: url('https://www.pottertour.co.uk/imagesAwards/lux-life-award-transparent-min.svg');
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  /* visibility: hidden; */
  animation: rosette-before 5s;
  animation-fill-mode: forwards;
  display: inline-block;
  height: 100%;
  position: absolute;
  width: 100%;
  opacity: 0;
}

@keyframes rosette-anim {
  95% {
    position: absolute;
    background: rgb(51, 55, 56);
    height: 137px;
    width: 142px;
    border-radius: 70px;
    transform: rotateY(2turn);
    top: 4px;
    right: 20px;
  }
  to {
    position: absolute;
    height: 137px;
    width: 142px;
    border-radius: 70px;
    transform: rotateY(3turn);
    background-color: rgb(164, 132, 60);
    z-index: 1;
    top: 4px;
    right: 26px;
  }
}

@keyframes rosette-before {
  99% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

<div id="rosette"></div>

​