style.css

@import url('https://fonts.googleapis.com/css2?family=Playwrite+DE+Grund:wght@100..400&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Baloo+Bhai+2:wght@400..800&display=swap');

* {
    padding: 0;
    margin: 0;
}

nav ul {
    list-style-type: none;
}

nav {
    background-color: rgb(79, 3, 79);
    color: white;
    height: 65px;
    font-size: 27px;
    display: flex;
    align-content: center;
    padding: 0 12px;
    font-family: "Playwrite DE Grund", cursive;
    font-weight: bold;
}

.gameCont {
    display: flex;
    justify-content: center; 
    margin-top: 50px;
}

.cont {
    display: grid;
    grid-template-rows: repeat(3, 10vw);
    grid-template-columns: repeat(3, 10vw);
    font-family: "Playwrite DE Grund", cursive;
}

.box {
    border: 2px solid black;
    font-size: 8vw;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
}

.box:hover {
    background-color: rgb(211, 215, 215);
}

.gameInfo {
    padding: 0 34px;
    font-family: "Baloo Bhai 2", sans-serif;
    font-size: 1.2rem;
}

.gameInfo h1 {
    font-size: 2.5rem;
}

.imgBox img{
    width: 0;
    opacity: 0;
    transition: width 1s ease-in-out, opacity 1s ease-in-out;
}

.bt-0 {
    border-top: 0;
}
.bl-0 {
    border-left: 0;
}
.br-0 {
    border-right: 0;
}
.bb-0 {
    border-bottom: 0;
}

#reset {
    margin: 6px 20px;
    padding: 4px 14px;
    background-color: aliceblue;
    border-radius: 6px;
    cursor: pointer;
    font-family: 'Playwrite DE Grund';
    font-weight: 600;
}

@media screen and (max-width: 970px){
    .gameCont{
        flex-wrap: wrap;
    }
    .boxText {
        font-weight: 600;
    }
    .gameInfo {
        margin-top: 34px;
        text-align: center;
    }
    .gameInfo h1 {
        font-size: 1.5rem;
    }
    .cont {
        grid-template-columns: repeat(3, 20vw);
        grid-template-rows: repeat(3, 20vw);
    }
}