The document provides 10 best practices for responsive web design:
1. Start with the smallest mobile screen size and work up to larger screens.
2. Use liquid layouts that adapt to any screen size rather than separate designs.
3. Limit main navigation for mobile and add more options on larger screens.
4. Design for grids but don't let them dictate the design. Consider new mobile capabilities.
5. Be aware that mobile users may have large fingers making small close buttons hard to press.