[Tex/LaTex] Change margins in a0poster class

margins

I want to make a poster using the a0poster package. I want to modify the text margins, so the text should be wider. I'm using boxes in a portrait, three column poster, but I have problem trying to get boxes bigger (one white page and after the text). Thanks

Best Answer

You can simply increase the width of the text in the page adding the line:

\addtolength{\textwidth}{1cm}

If 1cm is not enough or too much, change it to your needs.