style.css

/* .container{
    margin-left:20rem;
    margin-top:15rem;
}
.col{
    height:70px;
    width:70px;
    border:1px solid black;
}
.row{
    display:flex;
} */





/* General reset for better cross-browser compatibility */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.4);
    font-family: Arial, sans-serif;
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}
.title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #333;
}

.grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 10px;
    width: 90vw;
    max-width: 400px;
    aspect-ratio: 1; /* Ensures the grid is always square */
}

.col {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color:rgba(192, 233, 244, 0.3);
    border: 2px solid #000;
    font-size: 2rem;
    cursor: pointer;
    user-select: none;
    transition: background-color 0.3s ease;
}

.col:hover {
    background-color: #f9f9f9;
}

@media (max-width: 600px) {
    .col {
        font-size: 1.5rem;
    }
}

@media (max-width: 400px) {
    .col {
        font-size: 1rem;
    }
}