3 column Challange responsive design using grid

Hi Deren! You did a great job for a first responsive solution. The only feedback I have is that there seems to be an excessive amount of margin around the section and attribution. I can tell you were trying to match the design, but it may be best to vertically center the section. Since you're using CSS grid, you can apply the following CSS rule to the main tag:

.main { display: grid; height: 100vh; align-items: center; }

As for the attribution, consider decreasing the margin some, unless your intention is to hide it below the viewport.

I hope this is helpful. :)