Single price grid component

Hello ! It's time for a new challenge 😁. This time I wanted to push my skills and I tried SCSS. It was really fun to use, but I'm not totally good with it, I certainly need some practices with this tool.

I have some questions ;

• I have one HTML validation problem with <article>(or <section>) for the h2-h6 missing. But my <sections> are into my <article> (or <articles> into my <sections>). How can I rearrange it?

• I don't understand my accessibility problem. Someone have an explanation?

If you have any feedbacks, don't hesitate !

Best,

Logan