The list of supported CSS properties is growing quite large, and it's very easy to miss a typo.

This rule checks each property name to make sure that it is a known CSS property. All vendor-prefixed properties are ignored because vendors may add in their own properties at any point in time.

## Noncompliant Code Example

    a {
      clr: red; /* Noncompliant: 'clr' isn't a known property */
    }

## Compliant Solution

    .mybox {
      color: rgb(255,0,51); /* Compliant: 'color' is a known property */
      -moz-background-color: 10px; /* Compliant: '-moz-background-color' is a vendor property */
    }

## List of Known Properties

[[allProperties]]

## stylelint Related Rules

- property-no-unknown