October 2017
Intermediate to advanced
522 pages
10h 9m
English
Content preview from Mastering CSS
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Background images
In order to handle background images, we can use a special media query to determine the pixel ratio and then modify the background property to serve up the retina image. In this section, we'll determine how we can account for background images in the sphere of retina. We'll first create a media query designed for determining the pixel ratio. Then, we'll update the image being served to be the retina version. The seaweed in the footer is a background image, and thus will be the perfect image for this task.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.