main{margin-top:calc(100vw / 10);overflow:hidden;position:relative}.flow .background-image{position:fixed;top:0;left:0;width:100vw;height:75vw;background-size:contain;background-position:50%;transform:scale(1.3) translate(var(--translate-x,0),var(--translate-y,0));transition:transform .01s linear;z-index:-2}.flow .background-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(240,239,237,.9);z-index:-1}