A meta viewport tag gives the browser instructions on how to control the page's dimensions and scaling. Pages optimized for a variety of devices must include a meta viewport tag in the head of the document. Modern responsive design considers all of these things to optimize the experience for everyone. For example some of your visitors will be using a touchscreen. In addition, devices have different features with which we interact with them. Screen sizes are always changing, so it's important that your site can adapt to any screen size, today or in the future.

For example, on a phone users would see content shown in a single column view a tablet might show the same content in two columns.Ī multitude of different screen sizes exist across phones, 'phablets,' tablets, desktops, game consoles, TVs, and even wearables. The layout changes based on the size and capabilities of the device. Responsive web design, originally defined by Ethan Marcotte in A List Apart, responds to the needs of the users and the devices they're using. The use of mobile devices to surf the web continues to grow at an astronomical pace, and these devices are often constrained by display size and require a different approach to how content is laid out on the screen.

View media query breakpoints in Chrome DevTools.

Pick major breakpoints by starting small, then working up.Media queries based on device capability.

Use CSS media queries for responsiveness.

Css responsive design tutorial