The Magento 2.0 responsive design

To handle accessibility for different devices, the Magento 2.0 native themes (Blank and Luma) work with an RWD engine, as we discussed in the Chapter 4, Magento 2.0 Theme Development – the Developers' Holy Grail, and Chapter 5, Creating a Responsive Magento 2.0 Theme. The stylesheets engine provided by the LESS preprocessor is the main utility responsible for this design approach.

The Magento 2.0 native themes were built based on the Magento UI library. The Magento UI library works with CSS 3 media queries to render a page with predefined rules according to the device, which requests the page. An example of media queries would be one that applies a specific rule for screens with a maximum width of 640 px; take a look at the following code:

@media only screen and (max-width: 640px) { 
… 
}

With media queries, the themes apply breakpoints to handle different screen-width rules for different screen sizes of devices in a progression scale of pixels, as follows...