Recommended places to get started with HTML/CSS for character sheet making

In the near future I plan to start making some character sheets for obscure games that no one has heard about. I am quite familiar with Java and programming in general but I am finding it hard to grasp HTML and CSS. I understand how the specific attributes for Roll20 work and I understand enough to grab someone's sheet and fiddle with it, but I find it troublesome trying to align and position stuff where I want to due to lack of knowledge and experience. Do you guys know any good places, books or other sources that give a run through of using HTML and CSS?

W3 Schools is a good place to start for either of those.&nbsp; <a href="https://www.w3schools.com/html/" rel="nofollow">https://www.w3schools.com/html/</a> You may also want to check out the Mozilla Developer Network's manuals on HTML and CSS standards, which goes into more technical detail.&nbsp; <a href="https://developer.mozilla.org/en-US/docs/Learn/HTM" rel="nofollow">https://developer.mozilla.org/en-US/docs/Learn/HTM</a>...

The Roll20 Wiki's&nbsp; Building Character Sheets and CSS Wizardry pages are very useful!

Stealing other folks designs works (That's how I manage). &nbsp;Also...ask. &nbsp;Lots of helpful people here.