.app{display:grid;grid-template-areas:". title ." ". game controls";grid-template-columns:repeat(3,1fr)}h1{text-align:center;grid-area:title}button{padding:4px}.board{border:2px solid black;-webkit-user-select:none;user-select:none;margin:auto;grid-area:game}.controls{grid-area:controls}.row{display:flex}.upcoming{display:flex;flex-direction:row-reverse;justify-content:flex-end;gap:10px}.cell{width:30px;aspect-ratio:1;border:1px solid black}.cell.hidden{visibility:hidden}.cell.Empty{background-color:#c8c8c8}.cell.I{background-color:#50e3e6}.cell.J{background-color:#245fdf}.cell.L{background-color:#dfad24}.cell.O{background-color:#dfd924}.cell.S{background-color:#30d338}.cell.T{background-color:#843dc6}.cell.Z{background-color:#e34e4e}