Responsive Design Principles

Responsive design is the discipline of making one design serve every screen, from a 320-pixel phone held in one hand to a 27-inch monitor, without shipping a separate site for each. This course teaches the working responsive method that product and web designers actually use: designing mobile-first so the smallest screen sets the priority, choosing breakpoints where the content breaks rather than at arbitrary device sizes, building fluid grids with percentages and the 12-column model, sizing type and space in relative units (rem, em, ch, and viewport units) so everything scales together, and reflowing real components - navigation, cards, tables, forms, and images - as the available width changes. By the end you will have one complete multi-breakpoint layout - a landing or dashboard screen - specified at mobile, tablet, and desktop with a documented breakpoint map, a fluid type scale, and component reflow rules a developer can build directly.