Title: W3C HTML5 Validation Errors
Last modified: August 30, 2016

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# W3C HTML5 Validation Errors

 *  [Fist Full of Crisco](https://wordpress.org/support/users/fistfullofcrisco/)
 * (@fistfullofcrisco)
 * [10 years, 7 months ago](https://wordpress.org/support/topic/w3c-html5-validation-errors/)
 * Via W3C HTML Validation Service site:
    1. Error: Attribute **“type”** not allowed on element **“iframe”** at this point.
    2. Error: Attribute **“webkitallowfullscreen”** not allowed on element **“iframe”**
       at this point.
    3. Error: Attribute **“mozallowfullscreen”** not allowed on element **“iframe”**
       at this point.
    4. Error: The **“frameborder”** attribute on the **“iframe”** element is obsolete.
       Use CSS instead.
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 * Last reply from: [Fist Full of Crisco](https://wordpress.org/support/users/fistfullofcrisco/)
 * Last activity: [10 years, 7 months ago](https://wordpress.org/support/topic/w3c-html5-validation-errors/)
 * Status: not resolved