CSS Tips

Skip Navigation

What's Inside

• A Process to Learn CSS.
• Structure and Selectors.
• Semantics.
• Relative Units.
• Validating.
• Cascade Problems.
• CSS as a Diagnostic Tool.
• Grouping Selectors.
• CSS Shorthand.
• Organizing Similar Rules.
• External Stylesheets.
• XML Prolog.
• LoVe/HAte.
• FOUC.
• Quotation Marks.
• Numbers.
• Underscores.
• Inline Lists.
• overflow: hidden.
• Highlighting the Current page.
• References.

Search CSS Tips

Listserv

• Webdev Listserv

Back to

• Online Workshops
• Training Home
• ITSS Home
• UMD Home

Avoid Using Underscores in ID and class names

Underscores in id and class names are problematic. As Eric Meyer has observed "Between mistakes in implementation and changes to the specification, browser behavior with regard to underscores is rather convoluted".

<< previous | next >>