.iframe-payment {
    border-style: none;
    width: 100%;
}

#iframe-container {
    overflow: hidden;
    height: 600px;
    position: relative;
}

#iframe-container iframe {
    border: 0;
    height: 100%;
    left: 0;
    position: absolute;
    top: 0;
    width: 100%;
}