How can i change the theme of the code i have created

Question

I'm new in programming and i'm interested in making my own program, i have just created my first HTML page
https://code.sololearn.com/WJTRdZc3EMg2/?ref=app

Answer 1

The code you posted is not yours... I see on your profile that you did create your own program. Please change the link so that the code shown is yours.

And, here are the guidelines for posting and content creation here on SoloLearn. Welcome!

https://www.sololearn.com/Content-Creation-Guidelines/