What Is Data Type in CSS?


Heather Bennett

What Is Data Type in CSS?

In CSS, data types are used to define the different types of values that can be assigned to CSS properties. Understanding data types is essential for properly styling elements on a webpage.

Numeric Data Types

CSS supports several numeric data types:

  • Length: Represents a measurement such as pixels (px), ems (em), or percentages (%).
  • Angle: Represents an angle measurement such as degrees (deg) or radians (rad).
  • Time: Represents a duration of time such as seconds (s) or milliseconds (ms).
  • Frequency: Represents a frequency measurement such as hertz (Hz) or kilohertz (kHz).

Text Data Types

CSS also supports various text-based data types:

  • String: Represents a sequence of characters enclosed in quotation marks.
  • URL: Represents a URL address.

List Data Types

CSS provides list-based data types:

  • List: Represents an ordered list, unordered list, or custom counter style.

Miscellaneous Data Types

In addition to the above, CSS includes miscellaneous data types such as:

  • Color: Represents color values using various formats like hexadecimal, RGB, or HSL.
  • <integer>: Represents whole numbers (positive, negative, or zero).
  • <number>: Represents numeric values with or without units.
  • <percentage>: Represents a percentage value.


Understanding the different data types in CSS is crucial for styling web elements effectively. By using the appropriate data types, you can ensure that your styles are accurately applied and enhance the overall appearance of your website.

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