animation实现闪烁效果

.commodity-sign-wrap{
	animation:blink 1s infinite;
	-webkit-animation:blink 1s infinite; /*Safari and Chrome*/
}
@keyframes blink{
	0%{
		opacity: 0;
	}
	50%{
		opacity: 100;
	}
	100%{
		opacity: 0;
	}
}
@-webkit-keyframes blink{
	0%{
		opacity: 0;
	}
	50%{
		opacity: 100;
	}
	100%{
		opacity: 0;
	}
}