By default, references to external CSS files will block the page from rendering while they are fetched and executed. Sometimes these files _should_ block rendering, but can be inlined to avoid additional round-trips while the page is waiting to render. Sometimes, such as with stylesheets that are only used for loading custom fonts, inline or async CSS can greatly improve perceived performance.
- /index_htm_files/xr_fonts.css
- /index_htm_files/highslide.css
- /index_htm_files/xr_main.css
- /index_htm_files/custom_styles.css
- /index_htm_files/xr_text.css
- /index_htm_files/xr_all.css
- /index_htm_files/ani.css