#naglowek{
	width:100%;
	height:300px;
	background-color:yellow;	
}

#lewy{
	width:20%;
	height:700px;
	background-color:grey;
	float:left;
}

#srodek{
	width:50%;
	height:700px;
	background-color:orange;
	float:left;
}

#prawy{
	width:30%;
	height:700px;
	background-color:grey;
	float:left;
}

#stopka{
	width:100%;
	height:200px;
	background-color:yellow;
	clear:both;
}