<div class="gao">1321</div>
css
<style>
.gao{
font-size: 24px;
animation: hide-gao 2s ease-in;
}
@keyframes hide-gao{
0%{ opacity : 0;}
50% { opacity:0.5;}
100% { opacity:1;}
}
</style>
<div class="gao">1321</div>
css
<style>
.gao{
font-size: 24px;
animation: hide-gao 2s ease-in;
}
@keyframes hide-gao{
0%{ opacity : 0;}
50% { opacity:0.5;}
100% { opacity:1;}
}
</style>
本文标题：CSS3过渡效果
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