Explanation about CSS Custom Properties
CSS custom properties, also known as CSS variables, are a very powerful tool for simplifying and adapting designs on web pages. These variables allow you to define specific values and then use them throughout your CSS. By using CSS custom properties, you can easily change colors, dimensions, and... without the need to edit all of your CSS files.
To define a custom property, you must start its name with two hyphens. For example, if you want to define color variables, you can write it like this:
Custom properties such as CSS variables can be used within any CSS rules. This property is particularly useful when you want to quickly change a color scheme or layout of a web project without having to revisit your entire CSS.
This capability is especially useful in large-scale projects, as a small change in a variable can significantly alter the entire website's appearance. Furthermore, these variables benefit from inheritance, and if one specific element gets assigned a custom property, all child elements can utilize it unless overridden.
How do we use these custom properties?
Using CSS custom properties is very straightforward. For instance, to create and use a variable for a background color, look at the following code:
:root {
--main-bg-color: #ffebcd;
}
body {
background-color: var(--main-bg-color);
}Code Explanation Line by Line
:root refers to the root element, which is used to define the most global variables. --main-bg-color is the name of the custom property defined to be used for the background color. #ffebcd is the color value assigned to the custom property. background-color: var(--main-bg-color); uses the variable in defining the body's background color.