.hero-section{position:relative;height:100vh;width:100%}.hero-section .three-canvas{position:absolute;top:0;left:0;height:100%;width:100%;z-index:-10}.hero-section>div{z-index:0}.nav,.threeHero{width:100%}.nav{position:absolute;top:0;left:0;height:100%;z-index:10}