Title: CSS3 validation?
Last modified: August 24, 2016

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# CSS3 validation?

 *  Resolved [Darek L](https://wordpress.org/support/users/darekl/)
 * (@darekl)
 * [10 years, 11 months ago](https://wordpress.org/support/topic/css3-validation/)
 * Hi Tobias,
 * I would like to ask if there is plan for CSS3 validation feature?
    I found some
   errors during CSS3 validation. See more details here: [see CSS3 validation output](https://jigsaw.w3.org/css-validator/validator?uri=http%3A%2F%2Fcoaching.dariusz-licznerski.pl%2F&profile=css3&usermedium=all&warning=1&vextwarning=&lang=en)
 * I have the `tablepress-combined.min.css` file in `wp-content` folder that causes
   errors. Don’t know what it is.
 * Regards,
    Darek
 * [https://wordpress.org/plugins/tablepress/](https://wordpress.org/plugins/tablepress/)

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [Tobias Bäthge](https://wordpress.org/support/users/tobiasbg/)
 * (@tobiasbg)
 * [10 years, 11 months ago](https://wordpress.org/support/topic/css3-validation/#post-6040711)
 * Hi Darek,
 * thanks for your question, and sorry for the trouble.
 * The `tablepress-combined.min.css` contains the TablePress default CSS and your“
   Custom CSS”.
 * Those mentioned issues are not actual issues, just small “hacks” for compability
   with older version of Internet Explorer. They are not really wrong and nothing
   to worry about.
 * Regards,
    Tobias
 *  Thread Starter [Darek L](https://wordpress.org/support/users/darekl/)
 * (@darekl)
 * [10 years, 11 months ago](https://wordpress.org/support/topic/css3-validation/#post-6040907)
 * Hi Tobias,
 * I have all my custom CSS in `style.css` file and I don’t care about any version
   of IE at all.
 * I guess it is good to have valid website code because IE and other browsers trying
   to be compliant with HTML5 and CSS3 standards. However I decided not nesting `
   @media` like this:
 *     ```
       @media screen and (max-width: 500px) {
             @media screen and (max-width: 300px) {
             ....
             }
       }
       ```
   
 * Nesting `@media` is working and supported by CSS3 but validator fails on it.
 * Regards,
    Darek
 *  Plugin Author [Tobias Bäthge](https://wordpress.org/support/users/tobiasbg/)
 * (@tobiasbg)
 * [10 years, 11 months ago](https://wordpress.org/support/topic/css3-validation/#post-6040908)
 * Hi Darek,
 * nesting `@media` queries like that looks weird, but TablePress isn’t doing that
   anyways.
 * Regards,
    Tobias

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘CSS3 validation?’ is closed to new replies.

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## Tags

 * [css3](https://wordpress.org/support/topic-tag/css3/)
 * [validation](https://wordpress.org/support/topic-tag/validation/)

 * 3 replies
 * 2 participants
 * Last reply from: [Tobias Bäthge](https://wordpress.org/support/users/tobiasbg/)
 * Last activity: [10 years, 11 months ago](https://wordpress.org/support/topic/css3-validation/#post-6040908)
 * Status: resolved