*{box-sizing:border-box;margin:0}:root{--app-height: 100%}html{height:var(--app-height);position:fixed}body{margin:0;font-family:Montserrat,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;height:var(--app-height);background-color:#000;color:#fff;-webkit-user-select:none;user-select:none;position:fixed}h1{font-size:4rem}