body {
background-color: #ffffff;
font-size: 11px;
font-family: Verdana, Arial, Sans-Serif;
color: #666666;
padding-top: 10px;
margin: 0px;
}

a {
color: #cc3300;
text-decoration: none;
}
a:hover {
text-decoration: underline;
}


h1 {
border-top:1px solid #666666;
border-bottom:1px solid #666666;
background-color: #cc3300;
color: #ffffff;
font-size: 11px;
text-transform:uppercase;
padding-left: 28px;
padding-top: 5px;
padding-bottom : 5px;
background-image: url(../design/tag.jpg);
background-repeat: no-repeat;
background-position: left center;
}

h2 {
border-top:1px solid #666666;
border-bottom:1px solid #666666;
background-color: #990000;
color: #ffffff;
font-size: 11px;
text-transform:uppercase;
padding-left: 28px;
padding-top: 5px;
padding-bottom : 5px;
background-image: url(../design/feed.jpg);
background-repeat: no-repeat;
background-position: left center;
}

h6 {
font-size:12px;
font-weight: bold;
padding-top: 10px;
padding-bottom: 10px;
margin:0px;}

#contenu {
width: 1000px;
padding:0px;
margin: 0px;
margin-left: auto;
margin-right: auto;
} 

<!-- HEADER -->
#header1 {
text-align: right;
background-color: #ffffff;
padding-top: 10px;
padding-bottom: 10px;
margin: 0px;
}

#header2 {
text-align: center;
text-transform:uppercase;
border-top:1px solid #666666;
border-bottom:1px solid #666666;
padding: 5px;
margin: 0px;
}
 
.headerlogo {
width: 350px;
font-size: 14px;
font-weight: bold;
text-align: left;
color: #cc3300;
}
.headerlogo a {
font-size: 24px;
}
.headerlogo a:hover {
text-decoration: none;
}

.headerdevis {
width: 150px;
text-align: center;
}
.headerbanniere {
width: 500px;
text-align: right;
}
<!-- CORPS -->

#outer{ 
border-left: solid 160px #ffffff; 
border-right: solid 200px #ffffff; 
background-color: #ffffff;
} 

#inner{margin:0; width:100%; } /* The ie/pc pecularity */ 

#left {
 width:160px; 
 float:left; 
 position:relative; 
 margin-left:-160px; 
 margin-right:1px;
}
#left a {
font-weight: bold;
}
 
#right {
 width:200px; 
 float:right; 
 position:relative; 
 margin-right:-200px; 
 margin-left:1px;
 }

#centre { 
position: relative; 
margin: 0px;
padding-left: 20px;
padding-right: 20px;
padding-top: 5px;
}

#centre1 a {
color: #cc3300; 
}

#centre2 a {
color: #990000; 
}

p {
padding: 5px 10px;
margin:0px; }

pre{
font-size: 12px;
padding: 5px 10px;
margin:0px;}

<!-- FOOTER -->
#footer {
text-align: right;
background-color: #ffffff;
font-size: 9px;
padding: 3px;
margin: 0px;
color: #666666;
}

#footer a {
color: #666666;
}