HTML and CSS courses are available online on a number of different platforms, ranging from free to certified paid courses. Here are some well-known examples:

FreeCodeCamp is a well-known platform that provides a thorough curriculum for web development, including HTML and CSS. It is available for free. You can obtain credentials after completing the self-paced courses. The portal also offers useful projects to assist you in putting your knowledge to use.

Codecademy: Codecademy provides interactive coding lessons, covering HTML and CSS, for both free and a fee. Although the fundamental courses are free, they also provide a Pro edition with more materials, tests, and projects. Following the Pro version's structured learning route, you can obtain a certificate from Codecademy.

Coursera hosts courses from universities and institutions all over the world, both for free and for a fee. Reputable institutions like Duke University and the University of London provide HTML and CSS courses. Although the content of certain courses is accessible for free, you might have to pay for the certificate.
HTML and CSS courses are available on the paid version of the online learning portal Udemy. There are both free and paid options, and you may frequently locate courses at a discount. Independent teachers design Udemy courses, so be sure to read reviews and ratings before registering.
Keep in mind that, while certificates might be useful for demonstrating your expertise, constructing projects for the actual world and gaining real-world experience will also significantly improve your skills.

www.worldversus.co.uk