#entete {
     background : url(../img/interfaces/entete-acc.png) no-repeat center bottom;  
}                                                        
/*************************************************/     
#pied {                                                   
	background : url(../img/interfaces/pied-acc.png) no-repeat center bottom;
}/*                                                                
#principal #left { 
    background : url(../img/basContenu.png) no-repeat center bottom;  
}*/