Responsive design

What is Responsive Design?

Responsive design is a web design approach where a website's layout, content, and visual presentation automatically adapts to fit the screen size and device of whoever is viewing it — from large desktop monitors to small mobile phones.

Before responsive design became standard, websites were built for one fixed width (typically 960px) and looked broken on mobile screens. Responsive design solved this by using flexible layouts, percentage-based widths, and CSS media queries to reflow and resize content dynamically based on viewport width.

Core Principles

The core principles of responsive design include: Fluid grids (layouts that use percentages rather than fixed pixel widths, so columns scale proportionally), Flexible images (images that resize within their containers rather than overflowing), and Media queries (CSS rules that apply different styles at different screen widths — breakpoints).

Why responsive design matters: Google uses mobile-first indexing, over 60% of global web traffic comes from mobile devices, and a non-responsive site ranks lower, converts worse, and frustrates users. This is also why mobile-first design has become the preferred methodology.

In Webflow, responsive design is built directly into the Designer's breakpoint system. At Appsrow, responsive design is not an afterthought — it's considered at every stage of the design and build process.