html, body  {
    background-color: hotpink;
    margin: 0;
}
p {
    text-align: center;
    color:snow;
    margin: 0;
    padding: 16px 0 16px 0;
}

#popup {
    background-color: #0000007f;
    color: white;
    position: fixed;
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}