#header{animation: myfirst 10s;  -webkit-animation: myfirst 10s;animation-iteration-count:infinite; animation-direction:alternate;-webkit-transform-style: preserve-3d;transform-style: preserve-3d; -webkit-backface-visibility: hidden;backface-visibility: hidden; /* Safari 与 Chrome */}
@keyframes myfirst
{
	0%{-webkit-filter: blur(0.1px); /* Chrome, Safari, Opera */   filter: blur(0.1px);backface-visibility: hidden;}
        25%{-webkit-filter: blur(0.1px); /* Chrome, Safari, Opera */   filter: blur(0.1px);backface-visibility: hidden;}
	100%{-webkit-filter: blur(1px); /* Chrome, Safari, Opera */  filter: blur(1px);backface-visibility: hidden;}
}

@-webkit-keyframes myfirst /* Safari and Chrome */
{
	0%{-webkit-filter: blur(0.1px); /* Chrome, Safari, Opera */  filter: blur(0.1px);backface-visibility: hidden;}
         25%{-webkit-filter: blur(0.1px); /* Chrome, Safari, Opera */   filter: blur(0.1px);backface-visibility: hidden;}
	100%{-webkit-filter: blur(1px); /* Chrome, Safari, Opera */  filter: blur(1px);backface-visibility: hidden;}
}