The flash of wrong theme on page load is one of the most annoying unsolved problems in web development. You store the user's preference in localStorage , but JavaScript runs after the HTML and CSS, so there's a brief moment where the page renders in the wrong theme. This article shows the compl...
Source: [Dev.to](https://dev.to/hasansarwer/dark-mode-in-5-minutes-with-salt-theme-gen-no-flash-zero-extra-dependencies-2ohb)