i used grid and flex

Your site looks great! The main things I'd change about your code are:

• using a <h2> tag somewhere in your html as you are supposed to use header tags in descending order without skipping any
• for <img> tags the alt description is not needed to images that are main decorative and provide no information
• adding hover effects to your buttons for greater site interactivity
• instead of using a .sec-button class you could've used .buttons:nth-child(2) in your css to customize it

Hope you find the feedback useful 👍