body {
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

form {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 1rem;
}

input[type="number"] {
    width: 10rem;
    padding: 0.5rem;
    font-size: 1rem;
    border: 1px solid #ccc;
    border-radius: 0.25rem;
}

button[type="submit"] {
    padding: 0.5rem;
    font-size: 1rem;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 0.25rem;
    cursor: pointer;
}

#overlay {
    display: flex;
    justify-content: center;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
}

#popup {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: #fff;
    padding: 1rem;
    border-radius: 0.25rem;
}

#player {
    height: 390px;
    width: 640px;
}

#close {
    padding: 0.5rem;
    font-size: 1rem;
    background-color: #dc3545;
    color: #fff;
    border: none;
    border-radius: 0.25rem;
    cursor: pointer;
    margin-top: 1rem;
}