| Base of Difference | HTML | CSS |
| Basic definition | HTML is the standard markup language which desribe the structure of web pages. | CSS is style sheet languages to describe the presentation and design web pages which include colors, fonts and layouts. |
| Support | There are number of community support for HTML which helps them utlize different types of web pages and there structure approaches as per the current industry standards. | In community CSS has also the huge backup and lots of community support for continuous web designing improvement as per the current standards |
| Main Approach | We use HTML to develop the basic content of any web page. | We use CSS to mainly implemented for web designing, page style formats, layouts and other visual effects. |
| Dependency | We cannot use HTML syntax and structure formats in CSS style sheets. | As CSS is independent of HTML and it can be used with any XML-based markup language. |
| Implementation | HTML is mainly for content and web page structure. | We can use CSS for presentation and design |
| Architecture | Being standard markup language for creating web pages, HTML used to have tags that are surrounding the content. | CSS is style sheet language, and here mainly selectors are declared using block statement syntaxes |
| Learning | When we say about learning is quite easy to leann and has clear syntax. | When we say about CSS it is quite messy and can create complications in codes. |
| Problem | When we say about CSS this will create a fragmentation problem but HTML doesnot produce such problems. | CSS has fragmentation problem so it has a performance variance between two browsers. |
| Load Time | As CSS uses very less code and will take less time than HTML | CSS take very less time to load |
| Security | HTML has very limited security features. | As CSS is being an open text-based system it doesnot have any built-in security. |
| multiple platforms | HTML is lightweight and it supports multiple platforms. | CSS is compatible with multiple devices |