Responsive Fylo data storage component using HTML and CSS

What are you most proud of, and what would you do differently next time?

N/A

What challenges did you encounter, and how did you overcome them?

N/A

What specific areas of your project would you like help with?

I used :is() CSS pseudo-class to apply the background-color for header and article.

:is(header, article){
 background-color: hsl(var(--clr-neutral-300));
}

I went to the website on my iphone SE with IOS 17.5.1 background-color doesn't appear even if I remove :is(). I applied -webkit- and -moz- vender prefixes per this article How to Fix CSS Issues on Safari and the background-color still doesn't show.

Is there something wrong with code that I'm not seeing? What other solutions can I use that fixes this issue?

Thanks,

Rebecca