.iframe-area {
    position: relative;
}
iframe {
    position: absolute;
    top: 0;
    right: 0;   
}
.contents article section h1 {
    font-size: 2rem;
    line-height: 1.2;
}

@media only screen and (max-width:768px) {
    
    iframe {
    position: relative;
    top: inherit;
    right: inherit;   
}

}