Recent work also considers the viewer proximity as basics of web design html5 and css3 pdf download of the viewing context as an extension for RWD. Content, design and performance are necessary across all devices to ensure usability and satisfaction. The fluid grid concept calls for page element sizing to be in relative units like percentages, rather than absolute units like pixels or points. Flexible images are also sized in relative units, so as to prevent them from displaying outside their containing element.
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. Responsive web design has become more important as the amount of mobile traffic now accounts for more than half of total internet traffic.
Therefore, Google announced Mobilegeddon in 2015, and started to boost the ratings of sites that are mobile friendly if the search was made from a mobile device. Responsive web design is an example of user interface plasticity. Due to the high volume of usage of internet on mobile devices they can no longer be ignored.
In 2014, for the first time more users accessed the internet from their mobile devices than desktop. Polyfills can be used to add support for features—e. HTML5 support, on Internet Explorer. Luke Wroblewski has summarized some of the RWD and mobile design challenges, and created a catalog of multi-device layout patterns.