how can i set space between divs?
this is my html/css code:
[JsFiddle code][1]


  [1]: http://jsfiddle.net/8nW7V/  
how can i set space between  

    nav id="section-navi"
    section class="section" 
    div id="footer-main"
how can i set space between divs?
===

this is my html/css code:
[JsFiddle code][1]


  [1]: http://jsfiddle.net/8nW7V/  
how can i set space between  

    nav id="section-navi"
    section class="section" 
    div id="footer-main"