CSS3 动画
通过 CSS3,我们能够创建动画,这可以在许多网页中取代动画图片、Flash 动画以及 JavaScript。
Internet Explorer 10、Firefox 以及 Opera 支持 @keyframes 规则和 animation 属性。
Chrome 和 Safari 需要前缀 -webkit-。
@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;}
}
实例:
当动画为 25% 及 50% 时改变背景色,然后当动画 100% 完成时再次改变:
@keyframes myfirst
{
0% {background: red;}
25% {background: yellow;}
50% {background: blue;}
100% {background: green;}
}
@-moz-keyframes myfirst /* Firefox */
{
0% {background: red;}
25% {background: yellow;}
50% {background: blue;}
100% {background: green;}
}
@-webkit-keyframes myfirst /* Safari 和 Chrome */
{
0% {background: red;}
25% {background: yellow;}
50% {background: blue;}
100% {background: green;}
}
@-o-keyframes myfirst /* Opera */
{
0% {background: red;}
25% {background: yellow;}
50% {background: blue;}
100% {background: green;}
}
实例3:改变背景色和位置:
@keyframes myfirst
{
0% {background: red; left:0px; top:0px;}
25% {background: yellow; left:200px; top:0px;}
50% {background: blue; left:200px; top:200px;}
75% {background: green; left:0px; top:200px;}
100% {background: red; left:0px; top:0px;}
}
@-moz-keyframes myfirst /* Firefox */
{
0% {background: red; left:0px; top:0px;}
25% {background: yellow; left:200px; top:0px;}
50% {background: blue; left:200px; top:200px;}
75% {background: green; left:0px; top:200px;}
100% {background: red; left:0px; top:0px;}
}
@-webkit-keyframes myfirst /* Safari 和 Chrome */
{
0% {background: red; left:0px; top:0px;}
25% {background: yellow; left:200px; top:0px;}
50% {background: blue; left:200px; top:200px;}
75% {background: green; left:0px; top:200px;}
100% {background: red; left:0px; top:0px;}
}
@-o-keyframes myfirst /* Opera */
{
0% {background: red; left:0px; top:0px;}
25% {background: yellow; left:200px; top:0px;}
50% {background: blue; left:200px; top:200px;}
75% {background: green; left:0px; top:200px;}
100% {background: red; left:0px; top:0px;}
}