Как написать переключатель темы на базе файлов cookie с помощью CSS и ванильного JavaScript
https://medium.com/nuances-of-programming/%D0%BA%D0%B0%D0%BA-%D0%BD%D0%B0%D0%BF%D0%B8%D1%81%D0%B0%D1%82%D1%8C-%D0%BF%D0%B5%D1%80%D0%B5%D0%BA%D0%BB%D1%8E%D1%87%D0%B0%D1%82%D0%B5%D0%BB%D1%8C-%D1%82%D0%B5%D0%BC%D1%8B-%D0%BD%D0%B0-%D0%B1%D0%B0%D0%B7%D0%B5-%D1%84%D0%B0%D0%B9%D0%BB%D0%BE%D0%B2-cookie-%D1%81-%D0%BF%D0%BE%D0%BC%D0%BE%D1%89%D1%8C%D1%8E-css-%D0%B8-%D0%B2%D0%B0%D0%BD%D0%B8%D0%BB%D1%8C%D0%BD%D0%BE%D0%B3%D0%BE-javascript-55410c795d37