https://64a33a8b1a33a65e79b26d27--splendid-stardust-7882d3.netlify.app

your solution looks good visually! some small code improvements can be made though

HTML/accessibility

• you've used a <section>, however that doesn't add any semantics nor a landmark. <section> is only useful if you can associate it with a header
• <article> is something that should make sense on it's own page, so definitely not the right element for that plan
• <a> is for linking to another page, i'm a bit unsure what other page you would navigate to when changing a plan/proceeding, they might be better off as a <button>
• you're missing an <h1>, which is like reading a book without a titleµ
• the image on top is meaningful content in my opinion, so it should be in the HTML with a proper alt text instead of in CSS

CSS

• no particular comment here, though you may want to look into CSS custom properties (or variables as they are often called as well) to have a centralized place to edit those instead of having to edit them all over your code