React time tracking

Hey Valentin D. Wow! This is a stupendous solution! You really nailed it, your grid layout is really fine here's a few tips that I think might be useful:

• Instead of declaring grid-columns like this grid-template-columns: 1fr 1fr 1fr 1fr;, you could use grid-template-columns: repeat(4, 1fr);
• At the screen width of 900px, instead of using 1 column, You could try 3 or 2 columns and then you later move on to 1 column when your screen becomes to small to handle multiple columns.
• You might want to include a level one heading (an <h1> tag) most preferably on the name "Jeremy Robson" in your case. This will fix your accessibility issue. I think you nailed it with your grid! Keep up the good work and happy coding!