Watch CSS variables, also known as custom properties. #css #css3 #coding #code #programming Video Tutorial

CSS variables, also known as custom properties, are a powerful feature in CSS that allow you to store values that can be reused throughout your stylesheet. This makes your CSS more maintainable and easier to read. Here's a quick overview of how to use them: 1. **Declaring a Variable**: You declare a CSS variable by prefixing its name with two dashes (`--`). Typically, you define these variables within the `: root` selector to make them globally accessible. ```css : root { --main-bg-color: #1e90ff; --main-text-color: #ffffff; } 2. **Using a Variable**: You can use the `var()` function to access the value of a CSS variable. ```css body { background-color: var(--main-bg-color); color: var(--main-text-color); } ``` 3. **Advantages**: - **Consistency**: Ensures consistent use of values like colors, fonts, and sizes across your stylesheet. - **Maintainability**: Makes it easier to update values. Changing the value of a variable updates it everywhere the variable is used. - **Readability**: Variables can have meaningful names, making your CSS easier to understand. 4. **Scope**: Variables can be scoped locally within a selector or globally within the `: root` selector. 5. **Fallback Values**: You can provide a fallback value in case the variable is not defined. ```css color: var(--undefined-variable, black); ``` CSS variables are supported in all modern browsers. They are a great way to make your CSS more dynamic and easier to manage. Would you like to see an example of how to use CSS variables in a specific context? Source: Conversation with Copilot, 9/6/2024 (1) Using CSS custom properties (variables) - MDN Web Docs. https://developer.mozilla.org/en-US/docs/Web/CSS/Using_CSS_custom_properties. (2) CSS Variables - The var() function - W3Schools. https://www.w3schools.com/css/css3_variables.asp. (3) How to Use Variables in CSS: CSS Custom Properties — SitePoint. https://www.sitepoint.com/how-to-use-variables-in-css/. (4) CSS Variables: What They Are and How They Work - HubSpot Blog. https://blog.hubspot.com/website/css-variables.