Maudit internet explorer [Résolu]

#conteneur{
}

body{margin:0px;}

#a {
height: 250px;
border-width: 1px; border-style: solid; border-color: #000000; border-top-width: 0;  border-right-width: 0;  border-left-width: 0;
background-color:#FFFFE0;
}

#b {
height: 30px;
border-width: 1px; border-style: solid; border-color: #000000; border-top-width: 0;  border-right-width: 0;  border-left-width: 0;
}

#c {
width: 600px;
height: 800px;
margin-right: auto;
margin-left: auto;
border-width: 1px; border-style: solid; border-color: #000000; border-top-width: 0;  border-bottom-width: 0;
}

#d{
background-color:#000000;
height: 50px;
}