The simplest way to load a CSS file in an HTML document is to use a
link element with
<link rel="stylesheet" href="mycssfile.css">
Referencing CSS this way works great, but it comes with a downside: it's synchronous. In other words, with a typical stylesheet link like this, the browser stops rendering subsequent portions of the page while it requests, downloads, and parses the file. Sometimes that blocking can be desirable because we don't want the browser to render the page before it has the CSS it needs. But not all of our CSS files are critical enough to delay access to the content, which is why we highly
... read the whole story at www.filamentgroup.com.