body {
    font-family: sans-serif;
    background-color: #1c1c1c;
    color: #fff;
    text-align: center;
}

#tableau {
    display: flex;
    justify-content: center;
    margin-top: 20px;
    gap: 10px;
    position: relative;
}

.column {
    width: 80px;
    min-height: 300px;
    position: relative;
}

.card {
    width: 100%;
    height: 100px;
    background-color: #fff;
    color: #000;
    border: 1px solid #333;
    border-radius: 8px;
    text-align: center;
    line-height: 100px;
    font-weight: bold;
    position: absolute;
    left: 0;
    cursor: pointer;
    user-select: none;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.4);
}

.card.selected {
    border: 3px solid #00f;
}