&gt; CSS loading&#x2F;parsing is render blocking.<p>Sometimes.  Sometimes not.  The problem is that browsers disagree on when it is and that some of them block way too much, which leads to the ugly workarounds.<p>There were some proposals for a &lt;link rel=&quot;async stylesheet&quot;&gt; that didn&#x27;t really seem to get much traction so far, but they&#x27;re really the right way to solve this problem.