Cascading style sheets Web sites 107 Design 102 HTML (Document markup language) 80 XHTML (Document markup language) 66 Web site development 41 JavaScript (Computer program language) 12 Computer graphics 11 Internet programming 11 Hypertext systems 10 Development 9 Application software 8 Electronic publishing 8 Ajax (Web site development technology) 6 Authoring programs 6 Web publishing 6 HTML (Document Markup Language) 5 DHTML (Document markup language) 4 Computer programs 3 Mobile computing 3 PHP (Computer program language) 3 Programming 3 XML (Document markup language) 3 Computer animation 2 Computer science 2 HTML ( Document markup language) 2 Adobe InDesign (Electronic resource) 1 Data structures (Computer science) 1 Desktop publishing 1 Dreamweaver (Computer file) 1