It’s called FOUC—a flash of unstyled content. To avoid it, the website should be Optimized properly (More details here). You can also use a preloader plugin. FOUC is not specific to any theme or plugin. For more information, check this link: https://en.wikipedia.org/wiki/Flash_of_unstyled_content.
Basically, when visiting a page or site, the browser needs first to print the HTML structure (the red part) and then apply the custom styles (the CSS that resizes it). So there is a brief moment of seeing the page appearing unstyled, but it shows fully styled once the browser has fully loaded the page. The browser can’t instantly just show the website fully as the process requires loading logically bit by bit.
In cases like this, you can use a preloader plugin, which will display a nice animation for the visitors and once everything is done loading it will show the content. You can check one here:
Let me know if this helps. Thanks ??
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This reply was modified 1 month, 2 weeks ago by Kausar Alam.