Question Problem of template

Hello !
Excuse my English because I am not English,
My concern is that we use the kunena forum recently but unfortunately the page is too small so I would like to know how to edit the forum is visible http://www.scoutes.org/index.php?option=com_kunena&view=entrypage&defaultmenu=155&Itemid=153&lang=fr

Thank you for your help

Hi
Open the forum-min.css file in the following path
components/com_kunena/template/default/css/kunena.forum-min.css

And search for This code

#Kunena {
line-height: 1.333em;
margin: 0;
min-width: 700px;
padding: 0;
}

Change the min-width: 700px to 560

#Kunena {
line-height: 1.333em;
margin: 0;
min-width: 700px;
padding: 0;
}


#Kunena {
line-height: 1.333em;
margin: 0;
min-width: 560px;
padding: 0;
}

I want to know if it's FTP or the administration of joomla?

Thank you baazza for your help - it helped me to find the answer.

It's quite simple. Do not change the file kunena.forum-min.css (there are very good reasons why you should not change that file). Add the following three lines to the end of your Joomla site template (../templates/lavinyav6/css/template.css):

so I just put it at the end but nothing happens

it works ok I'll put it between the body thank you for your help