Câu hỏi phỏng vấn CSS
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What is Sass?

Câu trả lời

Sass, which stands for Syntactically Awesome Style Sheets, is a CSS preprocessor that extends the functionality of conventional CSS with more advanced features, making it a powerful tool for web developers. It allows for writing cleaner, more maintainable, and reusable code, which can significantly enhance productivity and efficiency in web development projects[2][4][9][17].

Key Features of Sass

  1. Variables: Sass allows the use of variables to store values like colors, fonts, or any CSS value. This means you can define a value once and reuse it throughout the stylesheet, which simplifies making global changes[2][5][19].

  2. Nesting: Sass provides a way to nest your CSS selectors in a way that follows the same visual hierarchy of your HTML. This makes the stylesheets much easier to read and maintain[2][6].

  3. Partials and Import: You can write CSS in different files (partials) and import them into a main stylesheet. This helps in organizing CSS code better and maintaining stylesheets more efficiently[2][19].

  4. Mixins: Mixins allow you to create reusable pieces of code that can be included anywhere in the stylesheet. They can even accept arguments to make the mixin more dynamic[2][19].

  5. Inheritance: With the @extend directive, Sass allows one selector to inherit the styles of another without duplicating code. This is a powerful feature for keeping your CSS DRY (Don't Repeat Yourself)[2].

  6. Operators: Mathematical operators can be used for calculations right inside your CSS, making it easier to calculate dimensions and other values dynamically[5].

Advantages Over CSS

Sass offers several advantages over traditional CSS:

  • DRY Principle: Sass supports the DRY principle, which helps in reducing repetition of styles and maintaining consistency across the project[5].
  • Organized Code: Features like nesting, partials, and imports help in keeping the stylesheets organized and modular[2].
  • Advanced Functions: Built-in functions for manipulating colors a...
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