Responsive Social proof section

Here are some observations:

• You switch to desktop layout way too late. You seem to have taken the value of 1440px from the style guide. That's only the value the designer used to create the design. You need to use your judgment to estimate what the right breakpoint needs to be.
• The page looks bad at large screen sizes. Try to set a max-width.
• The top heading and paragraph are not centered in mobile layout. Using left and right margin of auto could be useful here.
• The stars aren't aligned with the text in the desktop layout. In order to do this you can remove the bottom margin of the individual images and use the flexbox property align-items: center.