.parallax-section{position:relative;will-change:transform,opacity;transition:transform .8s cubic-bezier(.77,0,.175,1),opacity .8s cubic-bezier(.77,0,.175,1);opacity:1;transform:translateY(0)}.parallax-section:not(:first-child){opacity:0;transform:translateY(100px)}.parallax-section.in-view{opacity:1;transform:translateY(0)}