🆚 CSS vs. OpenAPI
Compare technologies based on real-world usage data *- 📈 CSS is much more popular than OpenAPI.
- 🌍 CSS is more popular in all countries.
CSSType
About
Cascading Style Sheets (CSS) is a stylesheet language used to control the presentation of HTML and XML documents, defining layout, colors, typography, and responsive behavior across different devices.
It uses a cascading and specificity model to resolve style conflicts, supports reusable rules and selectors, and includes layout systems such as Flexbox and Grid, media queries for responsive design, and features for animations, transformations, and advanced text formatting.
Modern CSS features enable complex responsive interfaces and dynamic styling without JavaScript, including container queries, the :has() pseudo-class, the light-dark() function, native nesting, subgrid layouts, custom properties, and view transitions.
OpenAPI is a specification language for defining HTTP APIs, typically written in YAML or JSON.
It enables automated generation of interactive documentation (via tools such as Swagger UI and Redoc), schema-based request and response validation, automatic creation of client SDKs and server stubs in multiple programming languages, and integration into CI/CD pipelines.
Headquarters
w3.org/TR/CSS/Popularity
Determined by the number of sites using each technology.
Market share
Popularity by country
Determined by the number of sites detected from each country.
Awards
- 🥇 Most popular in the United States in the Standards category.
- 🥇 Most popular in Japan in the Standards category.
- 🥇 Most popular in the United Kingdom in the Standards category.
- 🥇 Most popular in France in the Standards category.
- 🥇 Most popular in the Netherlands in the Standards category.
- ⬆️ 22nd most popular in the Netherlands in the Standards category.
- ⬆️ 22nd most popular in Denmark in the Standards category.
- ⬆️ 22nd most popular in Peru in the Standards category.
- ⬆️ 23rd most popular in Chile in the Standards category.
- ⬆️ 23rd most popular in Bulgaria in the Standards category.
Popularity by domain category
Determined by the number of sites in each category.
Top sites
Top-ranked sites that use these technologies.
Compare alternatives
Technologies with similar characteristics.
Sass
JSON
OAuth
GraphQL
OpenID* According to recent studies, many of online reviews are fake.
When making your decision, it is better to rely on data that cannot be falsified.
Our service evaluates the popularity of technologies by the number of websites using them.