Title: 2 Render Blocking CSS Files
Last modified: December 6, 2017

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# 2 Render Blocking CSS Files

 *  Resolved [graphettion](https://wordpress.org/support/users/graphettion/)
 * (@graphettion)
 * [8 years, 5 months ago](https://wordpress.org/support/topic/2-render-blocking-css-files/)
 * Hello AO Staff,
 * I added above the fold CSS to my staging site and it worked perfectly then I 
   added it to my production site and it did not work as well and I’m trying to 
   figure out why.
 * Here’s the two sites:
    – [http://114.54f.myftpupload.com](http://114.54f.myftpupload.com)(
   staging) – [https://safetyskills.com](https://safetyskills.com) (production)
 * Google Speed Tests:
    – [https://developers.google.com/speed/pagespeed/insights/?url=http%3A%2F%2F114.54f.myftpupload.com%2F](https://developers.google.com/speed/pagespeed/insights/?url=http%3A%2F%2F114.54f.myftpupload.com%2F)(
   staging) – [https://developers.google.com/speed/pagespeed/insights/?url=https%3A%2F%2Fsafetyskills.com%2F](https://developers.google.com/speed/pagespeed/insights/?url=https%3A%2F%2Fsafetyskills.com%2F)(
   production)
 * I looked through the source code and did notice a different output of the css(
   really the php files). Would you happen to know what’s causing it?
 * It’s like it added this:
 * <link rel=”preload” as=”style” media=”all” href=”” onload=”this.rel=’stylesheet'”/
   >
 * on the staging site and not on production.
    -  This topic was modified 8 years, 5 months ago by [graphettion](https://wordpress.org/support/users/graphettion/).
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2F2-render-blocking-css-files%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [8 years, 5 months ago](https://wordpress.org/support/topic/2-render-blocking-css-files/#post-9757517)
 * can’t access your staging site so can’t compare, but I do see
 *     ```
       <link rel="preload" as="style" media="all" href="https://safetyskills.com/wp-content/cache/autoptimize/autoptimize_69c34273e966c07ece9f3c824aa6057d.php" onload="this.rel='stylesheet'" />
       ```
   
 * on production, so that’s correct.
 * that being said; GPSI is a black box, you see what’s coming out, but you don’t
   always know why I’m afraid. just one css-rule missing could be enough to cause
   GPSI to complain I’m afraid.
 *  Thread Starter [graphettion](https://wordpress.org/support/users/graphettion/)
 * (@graphettion)
 * [8 years, 5 months ago](https://wordpress.org/support/topic/2-render-blocking-css-files/#post-9757526)
 * Hrm, perhaps I should keep trying (i.e., copy/paste the same code and hit the“
   Save changes and empty cache” button?

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘2 Render Blocking CSS Files’ is closed to new replies.

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## Tags

 * [autoptimize css](https://wordpress.org/support/topic-tag/autoptimize-css/)
 * [render blocking css](https://wordpress.org/support/topic-tag/render-blocking-css/)

 * 2 replies
 * 2 participants
 * Last reply from: [graphettion](https://wordpress.org/support/users/graphettion/)
 * Last activity: [8 years, 5 months ago](https://wordpress.org/support/topic/2-render-blocking-css-files/#post-9757526)
 * Status: resolved