.main-hidden{height:100vh;overflow:hidden}header.tutorial-header{background-image:url(/tutorial/head.png);background-size:cover;padding:5vh 0;text-align:center}header.tutorial-header div{margin-top:0;-webkit-margin-end:2vh;margin-bottom:0;-webkit-margin-start:0;color:#fff;font-weight:700;font-size:4vh}div.tutorial-items{margin:3.5vh 0 0 0;padding:0 5vw;height:3000px}div.tutorial-item .tutorial-title{font-weight:700;cursor:pointer;padding:0 0 3.5vh 0}.tutorial-section-title-next{margin-top:20vh}.tutorial-section{background:url(/tutorial/back.png) repeat-y 50%/300%;margin:0 -5vw 20vh -5vw}.tutorial-section-element{padding:0 5vw}.tutorial-section-element .tutorial-section-title{font-weight:700}.tutorial-section-element .tutorial-section-body{text-align:center;margin:3vh 0}.tutorial-section-element .tutorial-section-body img{width:100%}