I would like to add a responsive 728×90 banner to the header and a responsive 300×250 banner to the sidebar.
I searched the forum and found a thread about changing socialmedia part in header.php with the banner code. I did that and on macbook and imac it looks awesome. For the ad in the sidebar I used a regular text widget. Pasted the code and it also shows fine on macbook and imac. But on iphone and ipad the images are not scaled. I would to scale the images so that they keep fitting the page.