Title: HTML 5/ XHTML Validation
Last modified: August 21, 2016

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# HTML 5/ XHTML Validation

 *  Resolved [ronnymac](https://wordpress.org/support/users/ronnymac/)
 * (@ronnymac)
 * [12 years, 10 months ago](https://wordpress.org/support/topic/html-5-xhtml-validation/)
 * SLB 2.0 RC3 gives validation errors for XHTML 1.0 transitional due to custom 
   attribute ‘data-slb-group’. Custom attributes validate for HTML5, but not the
   far more common XHTML 1.1 on most WordPress sites. SLB 2.0 needs to support both
   doc types.
 * [http://wordpress.org/plugins/simple-lightbox/](http://wordpress.org/plugins/simple-lightbox/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [Archetyped](https://wordpress.org/support/users/archetyped/)
 * (@archetyped)
 * [12 years, 10 months ago](https://wordpress.org/support/topic/html-5-xhtml-validation/#post-3958235)
 * Let’s keep the discussion in one place:
 * [https://github.com/archetyped/simple-lightbox/issues/50](https://github.com/archetyped/simple-lightbox/issues/50)
 * Thanks.

Viewing 1 replies (of 1 total)

The topic ‘HTML 5/ XHTML Validation’ is closed to new replies.

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 * 1 reply
 * 2 participants
 * Last reply from: [Archetyped](https://wordpress.org/support/users/archetyped/)
 * Last activity: [12 years, 10 months ago](https://wordpress.org/support/topic/html-5-xhtml-validation/#post-3958235)
 * Status: resolved