Is \'background-color: none;\' a Valid CSS Declaration?

Validity of "background-color: none" in CSS

In CSS, the validity of "background-color: none;" has been a subject of debate. Let's delve into the matter to find out if it is indeed a valid declaration.

The CSS 2.1 specification clearly outlines the possible values for the "background-color" property:

• transparent
• inherit

According to this specification, "" can be any recognized color keyword (e.g., "red," "blue") or a numerical color representation. Unfortunately, "none" is not listed among the valid color keywords.

Therefore, the declaration "background-color: none;" is not valid CSS. If you intend to make an element's background transparent, the appropriate value is "transparent."

The above is the detailed content of Is \'background-color: none;\' a Valid CSS Declaration?. For more information, please follow other related articles on the PHP Chinese website!