body {
    font-family: Arial, sans-serif;
    margin: 20px;
}

h1 {
    text-align: center;
}

#categories {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

#categories button {
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    border: none;
    cursor: pointer;
}

#categories button:hover {
    background-color: #0056b3;
}

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

#channel-list li {
    padding: 10px;
    background-color: #f8f9fa;
    margin-bottom: 5px;
    cursor: pointer;
}

#channel-list li:hover {
    background-color: #e9ecef;
}