does anyone know some ideas for things i can do with HTML and CSS?
yes, you could build a webpage.
XD no i meant like ideas for webpages lol
Start with making a layout, then make it about something you are passioned about (cars, sport, programming, tv series, films)
You could try something like a personal site or a site for an organization/group you like.
But really, anything can be good practice :)
Take a look at some of the simpler stuff on CodePen or Dribbble and try recreating it!
You should make a website about finding ideas for a website about ideas! This would be really cool!