Single price grid component using HTML and CSS

Your site looks pretty good. Some things that stand out to me:

• I see that you used display: grid. If you choose to use this you should use place-items: center to center the box as opposed to justify-content: center and align-items: center, which are commonly associated with display: flex
• for the third box, the "Why Us" box, you should use an unordered list to list out the items not line breaks. So it should look something like this:

<ul>
   <li>Item 1</li>
   <li>Item 2</li>
   <li>Item 3</li>
</ul>

• one last thing I noticed is that when the window size is small, a part of the box gets cut off. So I suggest that you add in media query values to switch your site into a mobile-friendly layout. To read more about media queries and responsiveness, you can read this and this.

Hope you find this feedback userful 👍