Can I add alt tag to custom css?

Is it possible to add alt text to custom css in this instance:{
background:url(%resource(photo-name.jpg)%) 50% 50% repeat; background-size:cover;


No. Further more, alt tag is a property for img.

Thanks for your reply! OK, is there a way to add an alt description in the above instance?

alt text can only be added to img tags. You have there n background image, so you are not able to add an alt tag there.

Are you able to change the code of the HTML element, which has applied the CSS class

I think that is beyond my skill set. I’m using Aptenon theme and the custom CSS refers to a banner image that is different on each page:

The question is, why you want to add an alt text to a background image?