CSS

A Definition

Cascading Style Sheets (CSS) is a method used add style to web pages. CSS controls the layout, colours, fonts, spacing, and overall visual aesthetics of web pages.

Overall, CSS is an essential tool for web development, providing the means to create visually appealing and user-friendly interfaces.

Key Features:

  1. Separation of Content and Presentation: CSS allows developers to separate the structure of a website (HTML) from its presentation, making it easier to maintain and manage.

  2. Cascading Nature: The "cascading" in CSS refers to the way styles are applied. Styles can be defined in multiple places (inline, internal, or external stylesheets) and can override one another based on specificity and source order.

  3. Selectors: CSS uses selectors to target HTML elements. These can be simple (like element names, classes, and IDs) or complex (using pseudo-classes and pseudo-elements).

  4. Box Model: CSS elements are represented in a box model, which includes margins, borders, padding, and the content itself. Understanding the box model is crucial for effective layout design.

  5. Responsive Design: CSS supports responsive design through media queries, allowing web pages to adapt their layout and appearance based on the size of the viewport, enhancing usability on various devices.

  6. Animation and Transitions: CSS also enables the creation of animations and transitions, adding visual effects to enhance user experience.