本章节分享一段代码实例，它利用CSS3实现了动态的月食效果。
动画其实比较简单简短，需要的朋友可以自行做一下分析，这里就不多介绍了。
代码实例如下:
蚂蚁部落 *{ margin:0; padding:0;}body{ background-color: #000;}.moonback{ width:600px; height:600px; background-color:#000; margin:0 auto; position: relative;}.moonback::before{ content:","; display:block; position:absolute; left:200px; top:100px; width:200px; height:200px; background-color:#ff0; border-radius:100px;}.moonback::after{ content:" "; display:block; position:absolute; left:26px; top:0px; width:200px; height:200px; background-color:#000; border-radius:100px; -webkit-animation:12s dog linear infinite; -moz-animation:12s dog linear infinite; animation:12s dog linear infinite; -webkit-animation-fill-mode:forwards; -moz-animation-fill-mode: forwards; animation-fill-mode: forwards;} @-webkit-keyframes dog{ 0%{ left:27px; top:0px; } 100%{ left:399px; top:216px; }}@-moz-keyframes dog { 0%{ left:27px; top:0px; } 100%{ left:399px; top:216px; }}@keyframes dog{ 0%{ left:27px; top:0px; } 100%{ left:399px; top:216px; }}.star{ position:absolute;}.star::before{ content:"★"; display:block; position:absolute; left:10px; top:20px; width:auto; height:auto; color:#fff; -webkit-transform:scale(0.5); -moz-transform:scale(0.5); transform:scale(0.5); -webkit-animation:1s starlight linear infinite; -moz-animation:1s starlight linear infinite; animation:1s starlight linear infinite; -webkit-animation-fill-mode:forwards; -moz-animation-fill-mode: forwards; animation-fill-mode: forwards;}.star::after{ content:"★"; display:block; position:absolute; left:40px; top:120px; width:auto; height:auto; color:#fff; -webkit-transform:scale(0.5); -moz-transform:scale(0.5); transform:scale(0.5); -webkit-animation:2s starlight linear infinite; -moz-animation: 2s starlight linear infinite; animation: 2s starlight linear infinite;} @-webkit-keyframes starlight{ 0%{ -webkit-transform:scale(0.5); } 100%{ -webkit-transform:scale(0.1); }}@-moz-keyframes starlight{ 0%{ -moz-transform:scale(0.5); } 100%{ -moz-transform:scale(0.1); }}@keyframes starlight{ 0%{ transform:scale(0.5); } 100%{ transform:scale(0.1); }}
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