.bloc_login {
    background: url("../images/login_bg.jpg") no-repeat scroll 0 0 transparent;
    height: 350px;
    margin: 0 auto;
    padding: 95px 0 0 0;
    position: relative;
    top: 20%;
    width: 450px;
}
header #header_content
{
	background : #fff url("../images/bg_header.png") no-repeat center 100% ;
}
header #logo img
{
	margin : 10px 0 0 5px;
}
.bloc_login_form{
	
	margin-top:105px !important;
}