What is CSS?

What is CSS?

Raphael Lanz's photo
Raphael Lanz
·

3 min read

CSS (Cascading Style Sheets) is a style sheet language used for describing the presentation of a document written in HTML (Hypertext Markup Language). It defines how HTML elements should be displayed on a web page, including the layout, colors, fonts, and other visual aspects. CSS allows web developers to separate the content and structure of a webpage from its presentation, making it easier to maintain and update the design across multiple pages. With CSS, you can apply styles, such as colors, fonts, margins, and positioning, to various elements of a webpage and create visually appealing and consistent designs.

How to use CSS

To use CSS (Cascading Style Sheets) in your HTML documents, follow these steps:

  1. Create a new CSS file: Create a new file with a .css extension (e.g., styles.css). This file will contain your CSS code.

  2. Link the CSS file to your HTML document: In the <head> section of your HTML document, add a <link> element to connect the CSS file. Use the rel attribute with the value "stylesheet" and the href attribute with the path to your CSS file.

Example:

<head>
  <link rel="stylesheet" href="styles.css">
</head>
  1. Write CSS rules: Open the CSS file and start writing CSS rules. CSS rules consist of selectors (to select HTML elements) and declarations (to define the styles). Here's an example:
/* CSS rule targeting the "heading" class */
.heading {
  color: blue;
  font-size: 24px;
}
  1. Apply CSS styles: In your HTML document, add the appropriate HTML element or apply a class or ID to target the element you want to style. Use the class or id attribute with the value you defined in your CSS rule.

Example:

<h1 class="heading">Hello, World!</h1>

In this example, the <h1> element will have the styles defined in the CSS rule with the "heading" class.

Repeat steps 3 and 4 to define and apply additional styles.

  1. Save and view your webpage: Save both your HTML and CSS files, then open your HTML file in a web browser. You should see the applied styles reflecting the CSS rules you defined.

Remember to use proper CSS syntax and follow best practices to ensure clean and maintainable code.

In conclusion, CSS (Cascading Style Sheets) is a powerful language used for styling and formatting HTML documents. It allows you to separate the presentation and design of your webpages from the structure and content. By creating CSS rules and applying them to HTML elements, you can control the appearance of your website, including colors, fonts, layouts, and more. CSS offers a wide range of selectors and properties, giving you flexibility and control over the visual aspects of your webpages. With CSS, you can create visually appealing and consistent designs, enhance user experience, and make your web content more engaging and professional.

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