Font not displaying correctly on first opening on browser ( HTML / CSS page )
Briefly

The issue you’re experiencing with the fonts not loading initially could be due to the way web fonts are handled and loaded in browsers.
Web-safe fonts are typically pre-installed on most systems, yet some specific fonts may require additional time to load properly, leading to default fonts being displayed.
To improve the initial loading experience for your fonts, consider using a web font service such as Google Fonts or Adobe Fonts that ensures proper loading.
Implementing a font-loading strategy, like using the CSS 'font-display' property, can also help mitigate issues with fonts not appearing as intended on first load.
Read at SitePoint Forums | Web Development & Design Community
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