main header{position:relative;width:min(100%,640px);padding-right:112px;min-height:80px}
.cursor-portrait{position:absolute;right:0;top:0;width:80px;height:80px;border-radius:6px;background-image:url('assets/portrait-grid.png');background-size:300% 300%;background-position:50% 50%;background-repeat:no-repeat;contain:paint}
@media(max-width:850px){main header{padding-right:88px;min-height:64px}.cursor-portrait{width:64px;height:64px}}