Welcome to the introduction to HTML and CSS! These are two fundamental technologies for building websites and web applications. In this tutorial, we will cover the basics of HTML and CSS to help you get started on your web development journey.

HTML 简介

HTML (Hypertext Markup Language) is the standard markup language for creating web pages and web applications. It describes the structure of a web page semantically and originally included cues for the appearance of the document.

HTML 结构

Here is a simple example of an HTML document:

<!DOCTYPE html>
<html>
<head>
  <title>HTML Example</title>
</head>
<body>
  <h1>Hello, World!</h1>
  <p>This is a paragraph.</p>
</body>
</html>

HTML 元素

HTML elements are the building blocks of HTML pages. Here are some common HTML elements:

  • <html>: The root element of an HTML page.
  • <head>: Contains meta-information about the document.
  • <title>: Specifies the title of the document.
  • <body>: Contains the content of the document.
  • <h1> to <h6>: Define headings.
  • <p>: Defines a paragraph.
  • <a>: Defines a hyperlink.

CSS 简介

CSS (Cascading Style Sheets) is a stylesheet language used to describe the presentation of a document written in HTML or XML. CSS is a cornerstone technology of the World Wide Web, alongside HTML and JavaScript.

CSS 选择器

CSS selectors are used to target HTML elements and apply styles to them. Here are some common CSS selectors:

  • Element selectors: Select elements by their type, such as h1, p, or div.
  • ID selectors: Select elements by their ID, such as #myElement.
  • Class selectors: Select elements by their class, such as .myClass.

CSS Properties

CSS properties define how HTML elements should be displayed. Here are some common CSS properties:

  • color: Sets the text color.
  • background-color: Sets the background color.
  • font-size: Sets the font size.
  • margin: Sets the margin around an element.

实践建议

To learn more about HTML and CSS, we recommend visiting our HTML/CSS 教程 page for detailed lessons and examples.

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HTML CSS Structure
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By following these tutorials, you will gain a solid understanding of HTML and CSS and be well on your way to becoming a web developer. Happy coding! 🚀