Best Practices for Responsive Web Design

One layout, every screen. Responsive design stopped being a nice-to-have somewhere around the last decade, and yet we still find fixed-width tables lurking in the wild.

Start mobile-first, lean on fluid units, and let CSS grid do the heavy lifting. Breakpoints should follow the content, not a list of popular device widths.

Test on a real phone occasionally. The emulator lies, and your thumbs will thank you.