Problème pour la taille d'un background

/*COPYRIGHT CSS PAR kitgraphiquegratuit.org*/  
/*************** STRUCTURE PRINCIPALE ***************/ 		
*  {
     margin:0;
     padding:0;
}
body, html {
    height:100%;
    background:#000 url(images/fond.jpg) repeat-x center top;
    background-attachment: true;
    font-family:tahoma, Verdana, Arial, Helvetica, sans-serif;
    font-size: 100%;
    font-size:0.9em;
    color:#FFF;
}

img, p, h1, h2, h3, h4, h5, h6, Span, object, table, td, tr, form {
    border:0;
    margin:0;
    padding:0;
} 

#conteneur {
    margin:0 auto;
    padding:0;
    width:920px;
}	  		
#header {
    background:url(images/header.png);
    width:915px;
    height:170px;
    text-align:left;
    padding:0 0 0 5px;
    position:relative;
    z-index: 9999;
}	
#contenu {
    background:url(images/contenu.png);
    width:900px;
    padding:0 10px;
    text-align:left;
}   
#colonne_gauche {
    float: left;
    width:700px;
    margin:0;
    padding:0;
}   
#colonne_droite {
    width:195px;
    margin:0 0 0 700px;
    padding:0;
    text-align:left;
    overflow:hidden;
} 				  
.petit_cadre_haut {
    background:url(images/petit_cadre_haut.png);
    width:195px;
    height:12px;
}	   
.petit_cadre_fond {
    background:url(images/petit_cadre_fond.png);
    width:183px;
    padding:0 6px;
    color:#626262;
    text-align:center;
	margin:0 auto;
}
.petit_cadre_bas {
    background:url(images/petit_cadre_bas.png);
    width:195px;
    height:15px;
}
.cadre {        
    margin:0 auto 20px auto;
    width:654px;
    text-align:left;
    background:#272c30;
    padding:10px;
    position:relative;
    -moz-border-radius: 6px 6px 6px 6px;
    -webkit-border-radius: 6px 6px 6px 6px;
    border-radius: 6px 6px 6px 6px;
    box-shadow: 0px 1px 5px #000;
}
.petit_cadre { 
    float:left;
    margin:0 auto 20px 14px;
    width:310px;
    text-align:left;
    background:#272c30;
    padding:10px;
    position:relative;
    -moz-border-radius: 6px 6px 6px 6px;
    -webkit-border-radius: 6px 6px 6px 6px;
    border-radius: 6px 6px 6px 6px;
    box-shadow: 0px 1px 5px #000;
}

.block {       
    margin:0 auto 20px auto;
	width:654px;
	text-align:left;
	background:#272c30;
	padding:10px;
	position:relative;
	-moz-border-radius: 6px 6px 6px 6px;
	-webkit-border-radius: 6px 6px 6px 6px;
	border-radius: 6px 6px 6px 6px;
	box-shadow: 0px 1px 5px #000;
}				     
.prez {
    background:url(images/prez.png);
	width:136px;
	padding:0;
	text-align:center;
	height:162px;
}
.prez  img {
    position:absolute;
	bottom:35px;
	left:50%;
	margin-left:-50px; /*On indique la moitié de la taille de l'image avec - devant*/
}
.info {
    font-size:0.7em;
	padding:3px 4px;
	width:136px;
	margin:-20px 15px 0 5px;
	color:#3b4349;
	font-weight:bold;
	float:left;
	position:relative;
	background:#e6e6e6;
	-moz-border-radius: 6px 6px 6px 6px;
	-webkit-border-radius: 6px 6px 6px 6px;
	border-radius: 6px 6px 6px 6px;
	box-shadow: 0px 1px 2px #000;
}
p.info1 {
	color:#FFF;
	font-size:1.1em;
	font-weight:normal;
	float:left;
	-moz-border-radius: 9px 9px 9px 9px;
	-webkit-border-radius: 9px 9px 9px 9px;
	border-radius: 9px 9px 9px 9px;
    background:#272c30;
	padding:3px 5px;
} 
p.info2 {
	color:#FFF;
	font-size:1.1em;
	font-weight:normal;
	float:right;
	-moz-border-radius: 9px 9px 9px 9px;
	-webkit-border-radius: 9px 9px 9px 9px;
	border-radius: 9px 9px 9px 9px;
    background:#2c9325;
	padding:3px 5px;
} 
/**************** PIED ****************/	
#pied {
    width:920px;
	padding:0;
	text-align:center;
	height:58px;
	background:url(images/pied.png);
}
#mentions {
	position:relative;
    float:right;
    width:170px;
    color:#131313;
    text-align:center;
    margin:0 10px 0 10px;
    background:#d6d6d6;
    padding:10px 10px 16px 10px;
    -moz-border-radius: 6px 6px 0 0;
    -webkit-border-radius: 6px 6px 0 0;
    border-radius: 6px 6px 0 0;
    background: -moz-linear-gradient(top, #d6d6d6 30%, #FFF);
    background: -webkit-gradient(linear, 0% 0%, 0% 100%, from(#d6d6d6), to(#FFF));
    -pie-background: linear-gradient(#d6d6d6, #FFF 100%); 
}
#mentions  a {
    color:#131313;
	text-decoration:none;
	outline:none;
	font-weight:normal;
	font-size:13px;
}
#mentions  a:hover, 
#partenaires  ul  li  a:hover {
    color:#2c9325;
}
#reseaux {
    position:relative;
	float:right;
	width:170px;
	color:#131313;
	text-align:center;
	margin:0 10px 0 0;
	background:#d6d6d6;
	padding:10px;
	-moz-border-radius: 6px 6px 0 0;
	-webkit-border-radius: 6px 6px 0 0;
	border-radius: 6px 6px 0 0;
	background: -moz-linear-gradient(top, #d6d6d6 30%, #FFF);
	background: (linear, 0% 0%, 0% 100%, from(#d6d6d6), to(#FFF));
	-pie-background: linear-gradient(#d6d6d6, #FFF 100%); 
}
#partenaires {
    position:relative;
	text-align:center;
	float:left;
	width:440px;
	color:#131313;
	margin:0 10px 0 10px;
	background:#d6d6d6;
	padding:10px;
	-moz-border-radius: 6px 6px 0 0;
	-webkit-border-radius: 6px 6px 0 0;
	border-radius: 6px 6px 0 0;
	background: -moz-linear-gradient(top, #d6d6d6 30%, #FFF);background: 
	-webkit-gradient(linear, 0% 0%, 0% 100%, from(#d6d6d6), to(#FFF));
	-pie-background: linear-gradient(#d6d6d6, #FFF 100%); 
}
#partenaires  ul#dernier {
    float:left;
    margin:0;
	padding:0;
	text-align:center;
	width:140px;
	list-style-type: none;
	border:none;
	margin:0;
}
#partenaires  ul{
    float:left;
    margin:0;
	padding:0;
	text-align:center;
	width:140px;
	border-right:1px solid #131313;
	list-style-type: none;
	margin:0;
}

#partenaires  ul  li  a {
    color:#131313;
    text-decoration:none;
    outline:none;
    font-weight:normal;
    font-size:12px;
}
#partenaires table {
    margin:0 auto;
	text-align:center;
}
p.piedpage {
    position:relative;
    color:#FFF;
    font-size:12px;
    font-weight:normal;
    background:#272c30;
    padding:2px 0 2px 0;
    margin:0 0 10px 0;
	-moz-border-radius: 4px 4px 4px 4px;
	-webkit-border-radius: 4px 4px 4px 4px;
	border-radius: 4px 4px 4px 4px;
}

/**************** MENU ****************/	
#menu {
    list-style:none;
    width:1199px;
    margin:0;
    height:37px;
	padding:0;
}
#menu li {
    float:left;
    display:block;
    text-align:center;
    position:relative;
    border:none;
}
#menu li a {
    font-family:Arial, Helvetica, sans-serif;
    font-size:14px; 
    color: #000;
    display:block;
    outline:0;
    text-decoration:none;
}
#menu li .drop {
    background:url(images/menu.png) right no-repeat;
    width:130px;
    height:44px;
    padding:9px 0 0 0;
	color:#525252;
    font-size:12px;
    font-weight:bold;
}  
#menu li:hover .drop {
    background:url(images/menu.png) left no-repeat;
    width:130px;
    height:24px;
    padding:29px 0 0 0;
}
#menu li .drop_vide {
    background:url(images/menu.png) right no-repeat;
    width:130px;
    height:44px;
    padding:9px 0 0 0;
    cursor:default;
}  
.dropdown_1column, .dropdown_2columns, .dropdown_3columns, .dropdown_4columns,.dropdown_5columns {
	margin:0 auto 0 1px;
	float:left;
	position:absolute;
	left:-999em;
	text-align:left;
	padding:10px 5px 10px 5px;
	border-top:none;
	color:#787878;
	background:#FFF;
	background: -moz-linear-gradient(top, #fcfdff, #e2e3e5);
	background: -webkit-gradient(linear, 0% 0%, 0% 100%, from(#fcfdff), to(#e2e3e5));
	-pie-background: linear-gradient(#e2e3e5, #fcfdff 100%); 
    border:1px solid #d4d6d7;
	-moz-border-radius: 0px 5px 5px 5px;
	-webkit-border-radius: 0px 5px 5px 5px;
	 border-radius: 0px 5px 5px 5px;
	z-index: 9999;
	box-shadow: 0px 1px 2px #000;
}
.dropdown_1column  {width: 190px;}
.dropdown_2columns {width: 280px;}
.dropdown_3columns {width: 420px;}
.dropdown_4columns {width: 560px;}
.dropdown_5columns {width: 700px;}
#menu li:hover .dropdown_1column, #menu li:hover .dropdown_2columns, #menu li:hover .dropdown_3columns,#menu li:hover .dropdown_4columns,#menu li:hover .dropdown_5columns {
	left:-1px;top:auto;
	}
.col_1,.col_2,.col_3,.col_4,.col_5 {
	display:inline;
	float: left;
	position: relative;
	margin-left: 5px;
	margin-right: 5px;
	color:#787878;
}
.col_1 {width:170px;}
.col_2 {width:270px;}
.col_3 {width:410px;}
.col_4 {width:550px;}
.col_5 {width:690px;}
#menu li ul {
    width:140px;
	float:left;
    list-style:none;
    padding:5px;
    margin:0 10px;
	background:#f3f3f3;  
	border:1px solid #dfdfdf;	
	-moz-border-radius: 6px 6px 6px 6px;
	-webkit-border-radius: 6px 6px 6px 6px;
	 border-radius: 6px 6px 6px 6px;
}
#menu li ul li {
    font-size:12px;
    line-height:14px;
    float:none;
    text-align:left;
	margin:0;
	padding:0;
}
#menu li ul li:hover {
    background:none;
    border:none;
    padding:0;
    margin:0;
}
#menu li:hover div a {
    font-size:12px;
	margin:0;
	padding:0;
    color:#818b92
}
#menu li:hover div a:hover {
    color:#2c9325;
    font-weight:normal;
}

#menu li .drop #ico_menu {
    position:absolute;
    margin:-20px 0 0 60px;
    width:16px;
    height:16px;
    background-repeat:no-repeat;
    left:-999em;
}
#menu li:hover .drop #ico_menu {
    left:-1px;
    top:auto;
}
/****************ZONE MEMBRE****************/
p#login{
    font-size:11px;
	color:#787878;
}
p#mdp {
	font-size:11px;
	color:#787878;
}
input {
	width:120px;
	height:25px;
	margin:2px 0;
}
#inscription  {
	float:right;
	width:120px;
	border-left:1px solid #787878;
	padding:0 0 0 10px;
	margin:5px 0 0 0;
	font-size:11px;
}
.separation {
	border-bottom:1px dotted #787878;
	margin:10px 0;
	width:100px;
	height:1px;
}
#bt_connexion {
	border:1px solid #e8e8e8;
	color:#787878;
	padding:0px 5px 0 5px;
	background:#096a02;
	text-align:center;
	display:inline;
	margin:5px 0 5px 5px;
	width:70px;
	height:20px;
	cursor:pointer	
}
/****************NEWSLETTER****************/
input#newsletter {
	width:130px;
	height:25px;
	margin:5px 0 5px 0;
	display:inline;
}
#bt_newsletter {
border:1px solid #b0b0b0;
color:#787878;padding:3px 5px;
background:#FFF;
text-align:center;
display:inline;
margin:5px 0 5px 5px;
width:20px;
height:20px;
cursor:pointer;
}
/*************** SLIDE ***************//* Featured Content Slider by: Chris Coyier */																									   		  				  
#page-wrap { 
    margin:0 auto;
    width: 160px; 
    position: relative; 
    min-height:240px;
}
ul { 
    list-style: square inside; 
}
blockquote { 
    padding: 0 20px; 
    margin-left: 20px; 
    font-size: 14px; 
    font-family: Georgia, serif; 
    font-style: italic; 
    margin-top: 10px;
}
.slider-wrap { width: 160px;
    float:right;
    height:240px;
}			
.panel ul { 
    text-align: left; 
    margin: 0 15px 0 30px; 
}
.stripViewer { 
    position: relative; 
    overflow: hidden; 
    width: 160px; 
    height:240px; 
}
.stripViewer .panelContainer { 
    position: relative; 
}
.stripViewer .panelContainer .panel { 
    float: left;
    height: 100%; 
    position: relative; 
    width: 160px; 
}
.stripNavL, .stripNavR, .stripNav { 
    display: none; 
}
#movers-row	{ 
    margin: 0; 
    width:160px;
}
#movers-row div { 
    float: left; 
    width:160px;
    margin: 0;
}
#movers-row div a.cross-link { 
    float: left;
    margin:5px 0 0 2px; 
}
.photo-meta-data {
    background: url(images/transpBlack.png); 
	padding: 10px; 
	height: 30px; 
	margin-top: -52px;
	width:502px; 
	position: relative; 
	z-index: 9998; 
	color: white; 
}
.photo-meta-data span { 
    font-size: 13px; 
}
.cross-link	{ 
    display: block; 
	width:50px;
	height:44px;
	position:relative; 
	z-index: 9998; 
	margin: 0;
	padding:6px 0 0 0;
	background:url(images/fpis.png);
} 
/************CLASS POUR PRÉSENTATION KIT************/
#drp {
    background:#e9e9e9;
    border:1px solid #c3c3c3;
    padding:10px;
    width:250px;
    margin:5px;
    -moz-border-radius: 5px 5px 5px 5px;
    -webkit-border-radius: 5px 5px 5px 5px;
    border-radius: 5px 5px 5px 5px;
}
/************FLASH INFO************/
#window  {
    width:183px; 
    height:40px; 
    overflow:hidden; 
    position:relative; 
}
#slideshow {
    width:400px; 
    height:700px; 
    overflow:hidden; 
    position:relative;
    font-size:12px;
}
#slideshow li {
    width:183px; 
    height:40px; 
    float:left; 
    display:inline;
}
/************ BALISE GÉNÉRIQUE************/
a                             {color:#FFF;text-decoration:none;outline:none}	 
a:hover                  {color:#2c9325;}		
span.vert               {color:#2c9325;} 
span.grand              {color:#2c9325;font-size:14px;font-weight:bold;}
span#welcome          {font-size:13px;font-weight:bold;color:#787878;display:inline;}
p.italic                {font-style:italic;}
h1                           {font-size:13px;}
h2                           {font-size:14px;}
h3                           {font-size:15px;}
h4                           {font-size:16px;}
h5                           {font-size:17px;}
h6                           {font-size:18px;}
h1, h2, h3, h4, h5, h6 {font-weight:bold}
hr                            {width:50%;margin:10px 0}