You're asking to jump straight from basic HTML/CSS to advanced. That's not a reasonable assumption. Instead, you'll have to invest the time to make incremental progress from where you are. Fortunately you can do that by studying other people's code.

Did you even try Googling "html css timeline"? There are many tutorials/examples, e.g. https://www.w3schools.com/howto/howto_css_timeline.asp