Responsive testimonals grid section using flexbox

The HTML structure is well-organized and clear, using appropriate tags like <main>, <div>, and headings to separate content effectively. Each testimonial is encapsulated in a <div class="card">, enhancing readability. However, the use of <h1> for each testimonial may affect the heading hierarchy; it would be better to use <h2> or <h3> for subheadings. The inclusion of images and names adds authenticity. Overall, it's a solid foundation for a testimonial page, but attention to heading levels and language consistency is needed.