image adjustement in color section

hey,

i’m trying to delete the pixel gap between my picture and the right screen border, i can see the container is 1 px wider than table inside, but i can’t figure which css section or div is able to controle that ..

here is my quick css code :

.nuage1 {bottom:0px; position:absolute; border-radius: 0px;}

.section_concept div.container{border: none; width: 100% !important;}

here is the picture:

here is the adress : http://lafabrique-bayonne.com/blog/

thanx for any help you can provide , this pixel gap makes me crazy :)