通過 CSS3，我們能夠創建動畫，這可以在許多網頁中取代動畫圖片、Flash 動畫以及 JavaScript。
@keyframes myfirst
{
from {background: red;}
to {background: yellow;}
}
@-moz-keyframes myfirst /* Firefox */{
from {background: red;}
to {background: yellow;}
}
@-webkit-keyframes myfirst /* Safari 和 Chrome */{
from {background: red;}
to {background: yellow;}
}
@-o-keyframes myfirst /* Opera */{
from {background: red;}
to {background: yellow;}
}
div
{
animation: myfirst 5s;
-moz-animation: myfirst 5s; /* Firefox */-webkit-animation: myfirst 5s; /* Safari 和 Chrome */-o-animation: myfirst 5s; /* Opera */}