Custom D&D 5e Character Sheets?

I'm new at this, just getting my toes wet. Not new to HTML/CSS/Javascript, new to creating custom sheets in roll20. What does it take to add my house rules and custom content in with the normal 5e character sheets? So my players don't have to input my homebrew content manually?

This isnt really practical to do with editing sheets, if you use the main 5E sheet, as the public sheet code is pretty old. If you'd want quick ways to add custom spells, magic items, feats or similar to their sheets, you'd be best to write up API commands with APIs like ChatSetAttr. Whatever you do, it's impossible to maje your custom content to be available in the charactermancer or the Roll20 Compendiums. If you want to edit how the sheet works, you're in for a hard time as the sheet is pretty complex. Info on editing Roll20 sheets: <a href="https://wiki.roll20.net/Building_Character_Sheets" rel="nofollow">https://wiki.roll20.net/Building_Character_Sheets</a>