body, html {
    height: 100%;
}

#playground {
    padding: 32px 32px;
}

#win {
    margin: 0;
    font-size: 50px;
    display: inline-block;
    text-align: center;
    width: 100%;
    color: black;
    visibility: hidden;
}

.button {
    background-color: white;
    color: black;
    text-align: center;
    display: inline-block;
    margin: 2px 2px;
    height: 100px;
    width: 100px;
    font-size: 20px;
    cursor: pointer;

}

.button:hover {
    background-color: aliceblue;
}