April 2013
Intermediate to advanced
274 pages
5h 39m
English
Content preview from Sass and Compass for DesignersBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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The rgba function
If you want to convert an existing color value (defined as either a variable or hex value) to an RGBA value (including an alpha layer for transparency), use the rgba function:
background-color: rgba(red,.9);
This will produce following CSS:
background-color: rgba(255, 0, 0, 0.9);
The two arguments needed are the color and then the value of the alpha layer (0 is entirely transparent, 1 is entirely opaque, .5 is halfway between the two).
From a practical point of view, it's similar to transparentize/fade-out and opacify/fade-in.
Note
Be aware that unless the value passed for the alpha layer is less than 1, Sass will compile the resultant color as a hex value or a named CSS color.
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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.
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