: By default, CSS is considered a "render-blocking" resource. This means the browser won't show the page until it has finished downloading and parsing the CSS. External vs. Internal :
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: Written inside tags. While faster for small projects because there's no extra download, it is harder to maintain and doesn't benefit from browser caching. Optimization Tips : : By default, CSS is considered a "render-blocking" resource
: Remove whitespace to make the download file size smaller. : By default
: Inline only the CSS needed for the "above the fold" content and defer downloading the rest. 4. Common CSS Keywords and Properties to Know