CSS Selectors, Properties, and ValuesJanuary 30, 2023 ⚊ 2 Min read ⚊ CSS
CSS (Cascading Style Sheets) is a style sheet language used for describing the presentation of a document written in HTML or XML. CSS allows developers to control the look and feel of a web page, including layout, colors, fonts, and more.
CSS is made up of three main components: selectors, properties, and values.
CSS Selectors are used to select the HTML elements to that you want to apply styles. Selectors can be based on elements, classes, IDs, and other attributes. Some common selectors include:
- Element Selector: Selects all elements of a specific type. E.g. “p” selector selects all <p> elements.
- Class Selector: Selects elements with a specific class attribute. E.g. “.highlight” selector selects all elements with class=”highlight”.
- ID Selector: Selects the element with a specific ID attribute. E.g. “#header” selector selects the element with id=”header”.
CSS Properties are used to control the presentation of the selected elements. Properties define the look and feel of the selected elements, such as the font size, color, background, and more. Some common CSS properties include:
CSS Values are used to specify the values for the properties. Values are specified for each property to determine the specific appearance of the selected elements. Values can be in various forms such as length, percentage, color, etc.
CSS can be applied to HTML documents in various ways, including inline styles, internal stylesheets, and external stylesheets. Inline styles are specified directly on the HTML elements, internal stylesheets are included within the <head> section of an HTML document, and external stylesheets are linked from the HTML document.
In conclusion, CSS Selectors, Properties, and Values are the building blocks of Cascading Style Sheets. By using selectors to select HTML elements, properties to control the appearance of those elements, and values to specify the specific details of the appearance, developers can create visually appealing and well-designed web pages.