div, iframe {
    text-align: center;
    justify-content: center;
    margin: 0, auto;
    display: flex;
    border-width: 5px;
}

iframe {
    position: relative;
    top: 10vh;
}

p {
    position: relative;
    z-index: 10;
    color: red;
    font-size: 20px;
    top: 15vh;
}

#back {
    position: relative;
    top: 20vh;
    font-weight: bold;
    text-decoration: underline;
    font-size: 15px;
}

a {
    text-decoration: none;
    color: red;
}