.board{max-width:50vw;display:flex;flex-wrap:wrap;border:2px solid brown;margin:0 auto;margin-top:50vh;transform:translateY(-50%);gap:5px;font-size:18px}.input{width:calc((100% - 10px) / 3);min-width:50px;box-sizing:border-box;flex-shrink:1;caret-color:transparent;height:100px;cursor:pointer;padding:4px;text-align:center;font-size:3em}