Help:CSS best practices

Thinking of customizing your community's design? When mapping out a CSS strategy, you want to make choices that are broadly appealing and welcome the largest possible range of editors and readers. Here are a few best practices that will help.

Start with the theme designer
The simplest way to customize your community is to use Fandom's theme designer. It lets you easily change your site's base color palette, wordmark, favicon and background. Anything that can be changed with theme designer should be changed with it. So start there before moving on to CSS.

Be careful with colors
Avoid low-contrast, clashing or lurid colors — especially in the content area. You want people to be able to easily read your articles so that they'll stick around longer.

Remember:
 * Not everyone's eyesight works the same as yours. A significant number of people have issues with degraded eyesight and color blindness.
 * Different devices behave differently. The colors you see on your own display might not work quite as well on another.
 * Have good contrast between text and the background.
 * Background images are cool, but not if you can't read the text on top of them. Use the Theme Designer's transparency slider with care, especially with a busy background.
 * Try to avoid busy backgrounds.
 * Try not to make font sizes too small, especially in the main text area.

Keep it simple
CSS offers you a cornucopia of possible effects to make a site really to stand out. But you should not overdo it. The goal of CSS is to make the community broadly appealing, and your flashy custom cursor may be turning off new readers.


 * Use decorative elements only where necessary - but try to keep that exclusive for the main page of your Wiki.
 * If a row of still images also does the trick, please consider that an option to animations.

Responsive design
Fandom pages have fluid widths. That means they change a bit according to the size of the browser window. Make sure your design fully works by varying the width of your browser during testing. If you can, test your design on an actual tablet, as well.

Write readable code
Write code that can be read and understood easily. Since your CSS will almost certainly be read by others at some point:
 * annotate it with comments like
 * give your custom classes and IDs understandable names. If it makes a box around something, consider calling it, not
 * add in spacing and indentation to your community's tastes — but pick one format and stick with it
 * organize the code logically, keeping code that affects the same part of the wiki together.

Useful links

 * Help:Customization policy - Fandom's policy on allowed customizations
 * W3Schools - an online guide to CSS
 * Mozilla Developer Network - an online CSS documentation
 * CSS-Tricks - an online CSS code library of supported codes
 * CanIuse - tables for support of front-end web technologies on desktop and mobile web browsers.
 * The W3C CSS Validation Service - this helps check for code errors, similar to Special:CSS itself.

Further help and feedback
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