How do i create a box

Can't get the box to display

[newgirl]

I am trying to create a 3 column layout in css. I have an image as a header. The problem is that I want to create a box around the 3 columns underneath the header, and then put all the 3 columns inside of the box.

I have tried creating a box around all three columns but that didn't work, it wouldn't display the box. And I have tried creating a table as well, and that also didn't display

Any suggestions?

[coopersita]

post some code, so we can see what you are doing.

[Tastatura]

see this tutorial

[cssmastery.com...]

(this is not my site)