CSS动画无法在Internet Explorer中运行，特别是IE9

Question

Here's the code I'm working with. Works fine in Chrome and Firefox, but not IE and can't figure out what I'm doing wrong. Basically an automatic image slider. In IE I'm just getting the first img with no sliding.

Any help would be appreciated.

<style type="text/css">
@keyframes slidy {
0% { left: 0%; }
20% { left: 0%; }
25% { left: -100%; }
45% { left: -100%; }
50% { left: -200%; }
70% { left: -200%; }
75% { left: -300%; }
95% { left: -300%; }
100% { left: -400%; }
}

@-webkit-keyframes slidy {
0% { left: 0%; }
20% { left: 0%; }
25% { left: -100%; }
45% { left: -100%; }
50% { left: -200%; }
70% { left: -200%; }
75% { left: -300%; }
95% { left: -300%; }
100% { left: -400%; }
}

@-moz-keyframes slidy {
0% { left: 0%; }
20% { left: 0%; }
25% { left: -100%; }
45% { left: -100%; }
50% { left: -200%; }
70% { left: -200%; }
75% { left: -300%; }
95% { left: -300%; }
100% { left: -400%; }
}

@-o-keyframes slidy {
0% { left: 0%; }
20% { left: 0%; }
25% { left: -100%; }
45% { left: -100%; }
50% { left: -200%; }
70% { left: -200%; }
75% { left: -300%; }
95% { left: -300%; }
100% { left: -400%; }
}

@-ms-keyframes slidy {
0% { left: 0%; }
20% { left: 0%; }
25% { left: -100%; }
45% { left: -100%; }
50% { left: -200%; }
70% { left: -200%; }
75% { left: -300%; }
95% { left: -300%; }
100% { left: -400%; }
}

body { margin: 0; } 
div#slider { overflow: hidden; }
div#slider figure img { width: 20%; float: left; }
div#slider figure { 
  position: relative;
  width: 500%;
  margin: 0;
  left: 0;
  text-align: left;
  font-size: 0;
  animation: 30s slidy infinite; 
  -webkit-animation: 30s slidy infinite; 
  -moz-animation: 30s slidy infinite; 
  -o-animation: 30s slidy infinite; 
  -ms-animation: 30s slidy infinite; 
}
</style>
<div id="slider">
<figure>
    <img alt="" src="#" />
    <img alt="" src="#" />
    <img alt="" src="#" />
    <img alt="" src="#" />
    <img alt="" src="http://static.lakana.com/nxsglobal/lasvegasnow/photo/2016/05/24/5mayors300X100-black-border_1464108603276_8689483_ver1.0.jpg" />
</figure>
</div>

Answer 1

正如您在此处看到的，IE9中不支持CSS动画： http ： //caniuse.com/#feat=css-animation

Answer 2

Yeah the problem is having to use IE. If it's for a client you can tell them you can't make this work on legacy browsers, maybe display something in place of it (ideally a message to upgrade their browser)