*{-webkit-box-sizing:border-box;box-sizing:border-box;position:relative}body{margin:0;padding:0;background:lightgray}header{position:fixed;background-color:rgba(139,139,255,0.726);width:100%;z-index:1}header h1{margin:10px 0;text-align:center}main .parallax-1{background-image:url(../images/1.jpg)}main .parallax-2{background-image:url(../images/2.jpg)}main .parallax-3{background-image:url(../images/3.jpg)}main .parallax-4{background-image:url(../images/4.jpg)}main .parallax{height:50vh;width:100%;background-attachment:fixed;background-position:center;background-repeat:no-repeat;background-size:cover}main section{height:50vh;width:100%}footer{background-color:rgba(139,139,255,0.726);padding:10px 0}footer p{margin:0;font-size:2em;text-align:center}