Dear: I need a help, as I am being detained on a project for this issue. I need to use this iframe code on my website, but it occupies 100% of the width of the web, and the height is automatic. This way you can also adapt to smartphones. I leave the code:
<iframe width="600" height="800" src=""http://www.deliveryby.com/vincintore""></iframe>
Thanks for your help.