body {
    font-family: 'Verdana';
    margin: 10px;
}

li {
    text-align: left;
}

.left {
    float: left;
}

.right {
    float: right;
}

.clearFix {
    clear: both;
}


/* Game board */

#game {
    width: 400px;
    height: 400px;
    margin: 0 auto;
}

#title {
    font-style: italic;
    text-align: center;
}

#score {
    font-size: 20px;
}

#hint {
    font-size: 14px;
}

.row {
    display: flex;
}

.tile {
    margin: 3px;
    border-radius: 10%;
    flex: 1 1 auto;
    cursor: pointer;
}

.tile:before {
    content: '';
    display: block;
    padding-top: 100%;
}


/* Modal */

#modal {
    visibility: hidden;
    position: absolute;
    left: 0px;
    top: 0px;
    width: 100%;
}

#modal div {
    width: 300px;
    margin: 150px auto;
    border: 1px solid black;
    padding: 10px;
    background: #CCCCCC;
    color: black;
    text-align: center;
}


/* Media queries for mobile devices */

@media only screen and (max-width: 480px) {
    #game {
        width: 85%;
    }
    #modal div {
        width: 80%;
    }
}