style.css

@import url('https://fonts.googleapis.com/css2?family=Nunito:ital,wght@0,200..1000;1,200..1000&display=swap');

* {
    font-family: "Nunito", Arial, Helvetica, sans-serif;
    background-color: black;
    color: white;
}

.outterContainer {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.containerCentralGrid {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 90vh;
    width: 90vh;
}

.centralGrid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(8, 1fr);
    height: 45vh;
    width: 45vh;
}

.descriptionGame {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 35vh;
    width: 80vh;
}

.cell {
    background-color: white;
    border-radius: 4px;
    border: 1px solid black;
}

#submitSolution {
    background-color: rgb(240, 240, 240);
    color: black;
    height: 50px;
    width: 130px;
    border-radius: 10px;
    font-size: large;
    font-weight: 900;
}

#playAgain {
    margin-top: 10px;
    display: none;
    background-color: rgb(240, 240, 240);
    color: black;
    height: 50px;
    width: 130px;
    border-radius: 10px;
    font-size: large;
    font-weight: 900;
    border: 0px;
}

#playAgain:hover {
    background-color: rgb(230, 230, 230);
    cursor: pointer;
}

.rules {
    text-align: center;
    font-size: small;
    width: 800px;
}

/*Mobile Phones*/
@media only screen and (max-width: 600px) {
    .containerCentralGrid {
        height: 65vh;
        width: 55vh;
    }
    .centralGrid {
        height: 38vh;
        width: 38vh;
    }
    .rules {
        width: 400px;
        text-align: center;
        height: 30vh;
        font-size: smaller;
    }
}