styles.css

.game-container {
    width: 500px;
}

.grid {
    height: 400px;
    width: 400px;
    display: flex;
    flex-wrap: wrap;
    background-color: #dcd6bc;
    margin-left: 50px;
    margin-top: 20px;
    margin-bottom: 10px;
    border: 10px solid #dcd6bc;
}

div {
    font-size: 25px;
    text-align: center;
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
}

.valid, .bomb {
    /* Width and height set to match 10 squares in a 400px grid */
    width: 40px;
    height: 40px;
    border: 5px solid;
    border-color: #f5f3eb #bab7a9 #bab7a9 #fff9db;
    box-sizing: border-box;
}


.checked {
    /* Width and height set to match 10 squares in a 400px grid */
    width: 40px;
    height: 40px;
    border: 2px solid #9c998d;
    box-sizing: border-box;
}