.card-board.sudoku{gap:0;padding:8px;background:#263f48;aspect-ratio:1}.card-board.sudoku button{border:1px solid #608d8b;border-radius:0;background:#c8e3d9;color:#183137;font-size:clamp(1rem,4vw,1.65rem);aspect-ratio:1;min-width:0;padding:0}.card-board.sudoku button.given{background:#a4c8bc;font-weight:900}.card-board.sudoku button.entry{color:#116d6a}.card-board.sudoku button.selected{background:#f3ca7f}.card-board.sudoku button.box-right{border-right:3px solid #274d57}.card-board.sudoku button.box-bottom{border-bottom:3px solid #274d57}@media(max-width:450px){.card-board.sudoku{padding:4px}.card-board.sudoku button{font-size:1rem}}