Responsive Web Design is an approach to web development that makes a website automatically adapt its layout, images, and content to fit the screen size and orientation of whatever device is viewing it whether it's a desktop monitor, a tablet, or a smartphone screen.
Instead of building separate websites for desktop users (example.com) and mobile users (m.example.com), developers build one single code base that fluidly resizes.
The Three Core Technical Pillars:
Fluid Grids
Traditional web pages used fixed widths. Responsive design uses relative units like percentages, viewport units, or CSS Grid/Flexbox. Elements shrink or expand proportionally as the viewport scales.
