body {
    font-family: Arial, sans-serif;
    padding: 20px;
    background-color: #f2f2f2;
}

h1, h2 {
    color: #333;
}

button {
    background-color: #ff6600;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #e65c00;
}

#participant-list ul {
    list-style-type: none;
    padding: 0;
}

#participant-list li {
    background: #fff;
    padding: 8px;
    margin-bottom: 5px;
    border-radius: 4px;
}