代码编辑器：
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<meta charset="utf-8"><link href="/static/next/css/tryit.css?v=2017082407" rel="stylesheet"/> 3
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<style> 5
#myIMG {6
vertical-align: 50px;7
animation: mymove 5s infinite; /* Chrome, Safari, Opera */8
animation: mymove 5s infinite;9
}10
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/* Chrome, Safari, Opera */12
@-webkit-keyframes mymove {13
50% {vertical-align: 100px;}14
}15
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/* Standard syntax */17
@keyframes mymove {18
50% {vertical-align: 100px;}