Mobile-First Responsive Breakpoints¶
Run the Responsive Breakpoints MicroSim Fullscreen
About This MicroSim¶
Drag the orange handle on the right of the simulated browser frame and watch the layout reflow at four canonical breakpoints — mobile, tablet, laptop, desktop. The hamburger menu, content cards, side rail, and marketing module appear and disappear as the viewport widens. Use the device preset dropdown to jump directly to common widths.
Lesson Plan¶
Learning Objectives¶
By the end of this activity, students will be able to:
- Describe what a responsive breakpoint is
- Identify canonical breakpoints in modern web design
- Explain why mobile-first produces simpler layouts than desktop-first