.sudoku-container {
    margin: 50px auto;
    text-align: center;
}

#sudoku-board {
    border-collapse: collapse;
    margin: 0 auto;
}

#sudoku-board td {
    border: 1px solid #000;
    width: 50px;
    height: 50px;
}

#sudoku-board input {
    height: 100%;
    max-width: 50px;
    text-align: center;
    font-size: 1.2em;
}
@import url("https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Koulen&family=Lato&family=Nunito&family=Playfair+Display:ital@1&family=Prata&family=Raleway:ital,wght@1,100&family=Roboto&family=Roboto+Condensed&family=Teko&display=swap");

.validButton {
    margin-top: 20px;
    font-family: Roboto, sans-serif;
    font-weight: 0;
    font-size: 14px;
    color: #fff;
    background: linear-gradient(90deg, #0066cc 0%, #c500cc 100%);
    padding: 10px 30px;
    border: 2px solid #0066cc;
    box-shadow: rgb(0, 0, 0) 0px 0px 0px 0px;
    border-radius: 50px;
    transition: 1000ms;
    transform: translateY(0);
    align-items: center;
    cursor: pointer;
}

.validButton:hover {
    transition: 1000ms;
    padding: 10px 50px;
    transform: translateY(-0px);
    background: linear-gradient(90deg, #0066cc 0%, #c500cc 100%);
    color: #0066cc;
    border: solid 2px #0066cc;
}