@keyframes snow {
0% {background-position: 0px 0px, 0px 0px, 0px 0px;}
100% {background-position: 500px 1000px, 400px 400px, 300px 300px;}
}
@-moz-keyframes snow {
0% {background-position: 0px 0px, 0px 0px, 0px 0px;}
100% {background-position: 500px 1000px, 400px 400px, 300px 300px;}
}
@-webkit-keyframes snow {
0% {background-position: 0px 0px, 0px 0px, 0px 0px;}
100% {background-position: 500px 1000px, 400px 400px, 300px 300px;}
}
@-ms-keyframes snow {
0% {background-position: 0px 0px, 0px 0px, 0px 0px;}
100% {background-position: 500px 1000px, 400px 400px, 300px 300px;}
}
#falling-snow {
background-image: url(http://4.bp.blogspot.com/-26HXwn0tlWA/UaJZYbdbDnI/AAAAAAAADfA/AeiBdAIR0zU/s1600/snow.png), url(http://4.bp.blogspot.com/-8RALuvldFh8/UaJZY1tUptI/AAAAAAAADfM/rIaHhS2A4yQ/s1600/snow3.png), url(http://4.bp.blogspot.com/--AYxx7PegOc/UaJZYvy9wVI/AAAAAAAADfE/0Lp5NLrudxc/s1600/snow2.png);
-webkit-animation: snow 20s linear infinite;
-moz-animation: snow 20s linear infinite;
-ms-animation: snow 20s linear infinite;
animation: snow 20s linear infinite;
}