#bloc1{
	width:605px;
	height:305px;
	position:absolute;
	top:0px;
	left:20px;
	overflow:hidden !important;
}

#bloc2{
	width:185px;
	height:170px;
	position:absolute;
	top:340px;
	left:20px;
	overflow:hidden !important;
}

#bloc3{
	width:185px;
	height:170px;
	position:absolute;
	top:340px;
	left:230px;
	overflow:hidden !important;
}

#bloc4{
	width:185px;
	height:170px;
	position:absolute;
	top:340px;
	left:440px;
	overflow:hidden !important;
}