Footer banner advertisement not responsive

[Giray]

What am I doing wrong? I have a banner ad in the footer. Unfortunately, on mobiles, the banner does not shrink responsively. I've tried with both 'image' ads and 'html' ads.

Thoughts? Anyone else have the same issue?

Thx.

[Jim M]

Looks like the advertisement currently is using custom HTML. You would need to apply the proper responsive CSS classes to have this work: 

As customizations, such as this, are outside our scope of support and if you are not comfortable with the nitty gritty of this, I would recommend using the image field in the advertisements module. Just do not specify an image for each screen size and it will resize it with the screen automatically. If this is not happening, you will want to switch to an unmodified theme and disable any third party applications/plugins.