Welcome History Hackers!
This is jsbin, an online code editor. It lets you edit webpages "live" -- if you type some text in the HTML pane (on the left) you will see it appear in the output pane (on the right). Give it a try!
CSS is 'cascading style sheet' language. It controls how the HTML looks. Try changing something in there.
This is a paragraph with a link. Can you change this text? Can you change the address that the link sends you to when you click on it?
And here is an image. Note how I can go on and on and on and on la la la la lal al la la lal la and the text wraps around the image.
hey here i am but you can't see me