1. Build for mobile first
2. Stop using carousels and sliders
3. Optimize your images
4. Lazy load images
5. Load web fonts with font swapping
6. Create smooth animations
7. Minimize third-party impact
8. Preconnect to key third-party domains
9. Wrangle your apps
10. Monitor the number of requests per subdomain

There are two reasons why people use CSS grid:

• 😎 CSS is awesome! It's a fact, deal with it.
• 🛠️ Grid is a great tool to build complex two-dimensional layouts.

I sometimes have a third reason to use CSS grid: prevent layout shifts.