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Responsive web design


marika


Responsive web design (often abbreviated to RWD) is an approach to web design in which a site is crafted to provide an optimal viewing experience—easy reading and navigation with a minimum of resizing, panning, and scrolling—across a wide range of devices (from desktop computer monitors to mobile phones).


Elements of responsive web design (RWD

A site designed with RWD uses CSS3 media queries, an extension of the @media rule, to adapt the layout to the viewing environment—along with fluid proportion-based grids and flexible images.
Media queries allow the page to use different CSS style rules based on characteristics of the device the site is being displayed on, most commonly the width of the browser.
The fluid grid concept calls for page element sizing to be in relative units like percentages or EMs, rather than absolute units like pixels or points.
Flexible images are also sized in relative units (up to 100%), so as to prevent them from displaying outside their containing element.

In simple terms, a responsive web design uses "media queries" to figure out what resolution of device it's being served on. Flexible images and fluid grids then size correctly to fit the screen. If you're viewing this article on a desktop browser, for example, try making your browser window smaller. The images and content column will shrink, then the sidebar will disappear altogether. On our homepage, you'll see the layout shrink from three columns, to two columns, to a singular column of content.

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