The following is a list of style sheet languages. Standard Cascading Style Sheets (CSS) Document Style Semantics and Specification Language (DSSSL) Extensible Stylesheet Language (XSL) Non-standard JavaScript Style Sheets (JSSS) Formatting Output Specification Instance (FOSI) Syntactically Awesome Stylesheets (Sass) Less (Less) Stylus SMIL Timesheets Stylesheet languages