body { 
        margin: 0; /* pour éviter les marges */ 
        }
.mn {
	color: #000000;
	text-decoration: none;
	font-family: Arial, Helvetica, sans-serif;
	font-size: 14;
}
a:active{
	color: #000000;
	text-decoration: none;
	font-family: Arial, Helvetica, sans-serif;
	font-size: 14px;
} 
a:visited{
	color: #333333;
	text-decoration: none;
	font-family: Arial, Helvetica, sans-serif;
	font-size: 14px;
}
a:link{
	color: #333333;
	text-decoration: none;
	font-family: Arial, Helvetica, sans-serif;
	font-size: 14px;
}
a:hover{
	color: #C32127;
	text-decoration: underline;
	font-family: Arial, Helvetica, sans-serif;
	font-size: 14px;
} 
.conteneur_1 {
	position:absolute;
	left: 50%;
	top: 50%;
	width: 550px;
	height: 400px;
	margin-top: -200px;
	margin-left: -275px;
}
.conteneur {
	margin-left: auto; 
    margin-right: auto;
	width: 750px;/* largeur obligatoire pour être centré */
	height: 607px;
	background-image: url(images/bkg_boat.jpg);
	background-repeat: no-repeat;
	text-align: left; /* on rétablit l'alignement normal du texte */
}
.conteneur_form {
	margin-left: auto; 
    margin-right: auto;
	width: 750px;/* largeur obligatoire pour être centré */
	height: 607px;
	text-align: left; /* on rétablit l'alignement normal du texte */
}

<style type="text/css">



td{
	color: #000000;
	font-size: 10px;
	font-family: 
	text-decoration: none;
}
TD {
	font-size: 12px;
	font-family: Arial,Verdana,Helvetica;
}

TD.all{
	font-size: 12px;
	font-family: Arial,Verdana,Helvetica;
    border-top: 1px solid #666;
    border-right: 1px solid #666;
    border-left: 1px solid #666;
    border-bottom: 1px solid #666;
}

.title{
	color: #000000;
	font-size: 15px;
	font-family: Verdana,Arial,Helvetica;
    border-top: 2px solid #666;
    border-bottom: 2px solid #666;
}

.top{
    border-top: 1px solid #666;
}
.bottom{
    border-bottom: 1px solid #666;
}

input.little{
    border-top: 1px solid #666;
    border-right: 1px solid #666;
    border-left: 1px solid #666;
    border-bottom: 1px solid #666;
	width: 120px;
}
input.middle{
    border-top: 1px solid #666;
    border-right: 1px solid #666;
    border-left: 1px solid #666;
    border-bottom: 1px solid #666;
	width: 230px;
}
input.long{
    border-top: 1px solid #666;
    border-right: 1px solid #666;
    border-left: 1px solid #666;
    border-bottom: 1px solid #666;
	width: 470px;
}
input.big{
    border-top: 1px solid #666;
    border-right: 1px solid #666;
    border-left: 1px solid #666;
    border-bottom: 1px solid #666;
	width: 350px;
	height: 50px;
}
textarea.middle{
    border-top: 1px solid #666;
    border-right: 1px solid #666;
    border-left: 1px solid #666;
    border-bottom: 1px solid #666;
	width: 350px;
	height: 50px;
}
textarea.middle2{
    border-top: 1px solid #666;
    border-right: 1px solid #666;
    border-left: 1px solid #666;
    border-bottom: 1px solid #666;
	width: 470px;
	height: 50px;
}





</style>