Grid three column layout time challenge

I took this one for easy, even thought I am not completely fluent with display: grid; yet. So I wanted to challenge myself to do it in less than an hour (was hoping for 30 minutes). It took me 47 minutes and 29 seconds all the way. This time started with pressing "Start challenge" button and stopped with the last upload to live site. It includes everything...setting up a project and a repo, downloading files, coding, all of it. I struggled with setting the grid element widths, because I was not sure about the markup, that took me the longest I suppose.