用户:Yingxxxx/common.css

div
{
	width:200px;
	height:200px;
	background:white;
	animation:myfirst 3s;
	-moz-animation:myfirst 3s; /* Firefox */
	-webkit-animation:myfirst 3s; /* Safari and Chrome */
	-o-animation:myfirst 3s; /* Opera */
}

@keyframes myfirst
{
	0%   {background:red;}
	20%{background:yellow;}
	40% {background:blue;}
	80%{background:green;}
	100%{background:white;}
}

@-moz-keyframes myfirst /* Firefox */
{
	0%   {background:red;}
	20%{background:yellow;}
	40% {background:blue;}
	80%{background:green;}
	100%{background:white;}
}

@-webkit-keyframes myfirst /* Safari and Chrome */
{
	0%   {background:red;}
	20%{background:yellow;}
	40% {background:blue;}
	80%{background:green;}
	100%{background:white;}
}
	
@-o-keyframes myfirst /* Opera */
{
	0%   {background:red;}
	20%{background:yellow;}
	40% {background:blue;}
	80%{background:green;}
	100%{background:white;}
}