body {
    background: linear-gradient(to bottom, #000, #800080);
    color: #fff;
    font-family: 'Roboto', sans-serif;
}

.container {
    width: 80%;
    margin: 0 auto;
    text-align: center;
}

form {
    border: 2px solid #800080;
    border-radius: 15px;
    padding: 20px;
    background: #fff;
}

label, input, button {
    display: block;
    margin: 10px;
}

button {
    background: linear-gradient(to bottom, #800080, #4B0082);
    border: 2px solid #4B0082;
    border-radius: 10px;
    color: #fff;
    padding: 10px 20px;
    cursor: pointer;
}

button:hover {
    background: linear-gradient(to bottom, #9400D3, #6A5ACD);
    border: 2px solid #fff;
}

.number-board {
    display: flex;
    flex-wrap: wrap;
    margin-top: 20px;
}

.number {
    background: #fff;
    border: 2px solid #800080;
    border-radius: 10px;
    color: #800080;
    padding: 5px 10px;
    margin: 5px;
    cursor: pointer;
}

.number.selected {
    background: #800080;
    color: #fff;
}

.participants-container {
    margin-top: 20px;
}

#participants-list {
    list-style: none;
    padding: 0;
}

#participants-list li {
    margin: 10px;
}

#select-winner-button, #show-winners-button {
    margin-top: 20px;
}