Changing vertical alignment of teasers to horizontal I use the theme 'Business' and the standard setting of it is that the teasers of the articles I put on the front page are aligned vertically, but I'd like to have them horizontally in blocks of three--next to each other--instead. 

Now I would like to know if it's possible to change this, probably by changing some of the css code (If explained in detail I think I should be able to do this, but I'm rather inexperienced..) and otherwise perhaps with a module I haven't found yet?

I'd be very much obliged.

Edit to answer Volker's question:

I create the teasers automatically when I make a new page: In the menu settings there's an option to 'Promote to front page', which I do and then the link, the image and the first paragraph appear on the front page.
I think you'll have to investigate a bit further into your site structure generally. ;)

Assuming that you have content types of articles and basic pages on your frontpage, you could try something like this in your CSS:

.node-promoted {
float: left;
margin-right: 20px;
max-width: 280px;


}

"node-promoted" is the class one of several classes of teasers of articles and/or basic pages promoted to frontpage. You can use the almighty Firebug-Addon for FF to find this out ...