:root{--dim:.5}*{box-sizing:border-box}html,body{height:100%;margin:0}body{background:linear-gradient(rgba(0, 0, 0, var(--dim)), rgba(0, 0, 0, var(--dim))) center / cover no-repeat fixed, url(../../../bg.jpg) center / cover no-repeat fixed, #101510;place-items:center;display:grid;overflow:hidden}