What are CSS custom properties and how do they differ from preprocessors?
CSS custom properties, also known as CSS variables, allow you to store values in a variable-like format directly in CSS. Preprocessors, like SASS or LESS, are tools that extend CSS with features like variables, nesting, and mixins, but they require a compilation step.
Can you give me an example of how to use CSS custom properties?
Sure! You can define a custom property like this: --main-color: blue;
. Then, you can use it in your styles: color: var(--main-color);
.
What are the advantages of using preprocessors over CSS custom properties?
Preprocessors offer more advanced features like functions, mixins, and nesting, which can help organize and maintain complex stylesheets more effectively.
Are there any performance differences between the two?
CSS custom properties are processed by the browser at runtime, while preprocessors are compiled into standard CSS before being served. This can lead to faster load times with preprocessors, but custom properties can be more dynamic and flexible.
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