What is the relationship between html and css

HTML (Hypertext Markup Language) and CSS (Cascading Style Sheets) are the two basic elements for building web pages. They are closely connected and interdependent. HTML is used to describe the content, structure and semantics of web pages, while CSS is used to describe the style, layout and performance of web pages.

These two technologies are responsible for different aspects: HTML is responsible for the content and structure of the web page, while CSS is responsible for the style and layout of the web page. HTML defines the structure of a web page, including titles, paragraphs, lists, links, images, etc. CSS is responsible for style design, including fonts, colors, backgrounds, borders, layout, etc.

The relationship between HTML and CSS is a "separate but complementary" relationship. HTML is responsible for defining the content structure of a web page. It can exist independently, but without CSS, it looks like a simple text document. CSS supports styling of elements defined by HTML, and elements in HTML can be modified according to needs. At the same time, CSS can select elements and define styles through selectors and attributes. This flexible method can easily modify the styles of a large number of web pages.

The complementary relationship between HTML and CSS is achieved through style definition and element nesting. Any element in HTML can be decorated with CSS styles. By using CSS style sheets, you can easily define consistent styles for various elements throughout your website. At the same time, CSS can also select and modify the style of specific elements through attribute selectors and class selectors.

Regarding the writing methods of HTML and CSS, there are two common ways: inline styles and external styles. Inline styles are usually written directly in HTML markup, while external styles require the CSS stylesheet to be placed in a separate file and referenced through the HTML document.

In short, there is a very close relationship between HTML and CSS. Together, they form the basis of web development. Whether it is the content or appearance of a web page, it requires the synergy of HTML and CSS to achieve it. Because HTML and CSS complement and separate each other, they provide web developers with great flexibility and opportunities.

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