.tile.return-door{background:linear-gradient(135deg,#9ac7bc,#5b9189);box-shadow:inset 0 0 0 2px #dff8df,inset 0 -5px #48796e}.tile.return-door::after{content:'↩';font-size:29px;color:#fff4c5;text-shadow:0 2px #49726b}