| HTML | Maintain | 56,357 | $102,500 |
| CSS | Maintain | 48,975 | $112,500 |
| CSS Javascript | Maintain | 14,785 | $107,500 |
| Web Design | Maintain | 14,253 | $72,500 |
| HTML5 Development | Maintain | 11,639 | $132,500 |
| Responsive Web Design | Maintain | 11,466 | $112,500 |
| CSS3 | Maintain | 7,816 | $127,500 |
| HTML/CSS Proficiency | Maintain | 5,668 | $117,500 |
| Website Design | Maintain | 5,255 | $82,500 |
| Sass (CSS preprocessor) | Maintain | 2,338 | $87,500 |
| Tailwind CSS | Invest | 2,024 | $157,500 |
| SCSS | Maintain | 1,585 | $122,500 |
| Markup Language | Maintain | 1,123 | $107,500 |
| Theming | Maintain | 1,015 | $37,500 |
| CSS Preprocessor | Maintain | 881 | $27,500 |
| Less (CSS preprocessor) | Migrate | 795 | $132,500 |
| SVG | Maintain | 756 | $122,500 |
| Web Graphics | Maintain | 723 | $47,500 |
| Markdown | Maintain | 592 | $137,500 |
| HTML Scripting | Maintain | 422 | $87,500 |
| XHTML | Obsolete | 387 | $132,500 |
| Web Application Design | Maintain | 366 | $117,500 |
| Hypertext markup language HTML | Maintain | 276 | $122,500 |
| XAML | Maintain | 272 | $132,500 |
| Syntactically awesome style sheets SASS | Maintain | 251 | $102,500 |
| CSS Styling | Maintain | 180 | $47,500 |
| Standard generalized markup language SGML | Migrate | 177 | $67,500 |
| Bootstrap CSS | Maintain | 147 | $122,500 |
| Formatting Tools | Maintain | 96 | $62,500 |
| utility-first | Invest | 90 | $207,500 |
| BEM | Monitor | 82 | $42,500 |
| Prism | Maintain | 78 | $97,500 |
| CSS Architecture | Maintain | 72 | $172,500 |
| Web-Based Design | Maintain | 69 | $62,500 |
| CSS Development | Maintain | 68 | — |
| Scalable Vector Graphics Generation | Maintain | 67 | — |
| Styling Frameworks | Maintain | 62 | $187,500 |
| PostCSS | Maintain | 60 | $137,500 |
| Modular CSS | Maintain | 47 | $177,500 |
| HTML/CSS | Maintain | 36 | — |
| Mustache | Migrate | 32 | — |
| Collaborative Application Markup Language (CAML) | Migrate | 31 | — |
| HTML Editing | Not rated | 31 | $57,500 |
| Zero-Runtime CSS-in-JS | Invest | 26 | $162,500 |
| HAML | Migrate | 24 | $172,500 |
| SVG animation | Maintain | 24 | — |
| Compass | Migrate | 20 | — |
| Stylus | Not rated | 20 | — |
| Development - Macromedia Dream Weaver | Obsolete | 19 | — |
| CSS Container Queries | Invest | 16 | — |
| HTML Editor | Migrate | 16 | — |
| Development - Microsoft Expression | Obsolete | 15 | — |
| HTML/CSS Standards | Maintain | 15 | — |
| PSD to HTML | Not rated | 15 | — |
| Microsoft Office FrontPage | Obsolete | 11 | — |
| OOCSS | Migrate | 8 | — |
| CSS Subgrid Layout | Invest | 7 | — |
| Adobe Macromedia HomeSite | Obsolete | 6 | $122,500 |
| Jade | Migrate | 6 | $87,500 |
| SMACSS | Migrate | 6 | — |
| Development Tools Microsoft Expression Web | Obsolete | 5 | — |
| Nvu | Not rated | 4 | — |
| XML User Interface (XUI) | Obsolete | 4 | — |
| Web Page design software | Not rated | 3 | — |
| CSS Scroll-Driven Animations | Monitor | 2 | — |
| CSS Cascade Layers Architecture | Invest | 1 | — |
| WinOcular | Obsolete | 1 | — |
| quartz | Migrate | 1 | — |
| CoffeeCup The HTML Editor | Not rated | — | — |
| Faux Labs Splashup | Obsolete | — | — |
| HTML Generation | Maintain | — | — |
| HTML Preprocessor | Monitor | — | — |
| Leaner Style Sheets (LESS) | Migrate | — | — |
| Linspire Nvu | Not rated | — | — |
| Native HTML Popover and Dialog Patterns | Invest | — | — |
| OKLCH Color and Wide-Gamut CSS | Monitor | — | — |
| Page Description Language | Not rated | — | — |