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How can I define colors as variables in CSS?

I’m working on a CSS file that is quite long. I know that the client could ask for changes to the color scheme, and was wondering: is it possible to assign colors to variables, so that I can just change a variable to have the new color applied to all elements that use it? ...
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Does Java support default parameter values?

...force complete and valid construction contracts are a much better solution now. – user177800 Dec 18 '15 at 4:27 ...
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NPM/Bower/Composer - differences?

...be basic package information and dependencies. And yes, they are needed. Now, what about the READMEs? :-) https://github.com/bower/bower https://www.npmjs.org/doc/cli/npm.html https://getcomposer.org/doc/00-intro.md [update, four years later] bower is deprecated, and should not be used anymo...
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Hidden features of Android development?

...st yet in the Hidden Features series that I've been tracking for a while now. 6 Answers ...
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Warn user before leaving web page with unsaved changes

...rn confirmationMessage; //Gecko + Webkit, Safari, Chrome etc. }); }; Now to implement the isDirty method, there are various approaches. You can use jQuery and form serialization, but this approach has some flaws. First you have to alter the code to work on any form ($("form").each() will do)...
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How do you downgrade rubygems?

... Updated November 2011: Now that RVM's out, try running rvm install rubygems <version>. share | improve this answer | ...
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How can you programmatically tell an HTML SELECT to drop down (for example, due to mouseover)?

...lse people say it is not, but it was deprecated later on and does not work now. However, this only worked in Chrome. Read more if you're interested. According to W3C Working Draft for HTML5, Section 3.2.5.1.7. Interactive Content: Certain elements in HTML have an activation behavior, which m...
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.gitignore exclude folder but include specific subfolder

...erstood when the reverted patterns don't work. With your explanation, it's now clear. The gitignore documentation needs a "recipe" section to explain how to do this. – seh May 13 '11 at 0:32 ...
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CSS, Images, JS not loading in IIS

...nse will save the agony for my fellow developers. I would really like to know why this is working. Any thoughts? share | improve this answer | follow | ...
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Dynamically generating a QR code with PHP [closed]

... Sept 2019 - still working as of now! – Anupam Sep 16 '19 at 8:28  |  show 14 more comments ...