[Spellbound]

When Im writing in Word 2007, whenever I press enter once the text ends up
looking like this:

the black cow

jumped over the

orange moon.

However, when it is posted on a website, it looks like this:

the black cow
jumped over the
orange moon

How do I make it stop so that what the text looks like on the word page
looks the same on a web page?
Any answers in 'idiot English' please.

Thanks.