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CSS Property Reference

More than eighty CSS properties with their common values and practical notes, filterable as you type.

Search CSS properties

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Values are the most common ones. Check the MDN documentation for the full grammar of each property.

How to use the CSS Property Reference

  1. Type a property or idea such as grid, shadow or spacing.
  2. Read the common values and the note explaining the behaviour.
  3. Copy the property into your own stylesheet and adjust the value.

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Frequently Asked Questions

Common questions about the free online css property reference.

A property is the named style feature you set, such as color or display, and each one accepts a defined set of values.
Display chooses how a box participates in layout, for example block, inline, flex or grid.
Absolute is placed relative to its nearest positioned ancestor, while fixed is placed relative to the viewport.
It makes the declared width include padding and borders, which keeps element sizes predictable.
Set display to flex, then use justify-content center and align-items center on the container.
Margin adds space outside the border, while padding adds space inside the border around the content.
Gap sets the spacing between flex or grid items and replaces margin hacks on individual children.
Properties such as width, top and margin trigger layout, while transform and opacity can be animated more cheaply.
Yes. It is completely free, needs no account and works entirely in your browser with no tracking at all.

Last updated: October 10, 2026