/*滚动浮现*/
.roll{
	opacity: 0;
	
	transform: translateY(50px);
	
	transition: all 1s ease;
}
.roll-active{
	opacity: 1;
	
	transform: translateY(0px);
	
	transition: all 1s ease;
}

.roll-delay-1_0_0{
    transition-delay: 1s;
}
.roll-delay-0_7_5{
    transition-delay: 0.75s;
}
.roll-delay-0_5_0{
    transition-delay: 0.5s;
}
.roll-delay-0_2_5{
    transition-delay: 0.25s;
}

/*滚动浮现*/