Title: Responsive design headers
Last modified: August 21, 2016

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# Responsive design headers

 *  [shansta](https://wordpress.org/support/users/shansta/)
 * (@shansta)
 * [12 years, 7 months ago](https://wordpress.org/support/topic/responsive-design-headers/)
 * Hi,
 * Just after some info on headers. Google recommends using a Vary: User-Agent (
   [https://developers.google.com/webmasters/smartphone-sites/details](https://developers.google.com/webmasters/smartphone-sites/details))
   for responsive design. I’m just wondering if anyone is using this with w3tc and
   if changing the header will cause any problems with caching.
 * Thanks.
 * [http://wordpress.org/plugins/w3-total-cache/](http://wordpress.org/plugins/w3-total-cache/)

The topic ‘Responsive design headers’ is closed to new replies.

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## Tags

 * [cache](https://wordpress.org/support/topic-tag/cache/)
 * [header](https://wordpress.org/support/topic-tag/header/)

 * 0 replies
 * 1 participant
 * Last reply from: [shansta](https://wordpress.org/support/users/shansta/)
 * Last activity: [12 years, 7 months ago](https://wordpress.org/support/topic/responsive-design-headers/)
 * Status: not resolved