h3 {	position:relative;	left:110px;	width:400px;	}#particles {	position:relative;	background:url('images/particles_background.gif') no-repeat;	width:640px;	height:687px;	}#particles p {	position:relative;	left:110px;	width:450px;	}.quarks {	background:url('images/particles_quarks.gif');	position:absolute;	top:247px;	left:20px;	width:191px;	height:99px;	display:block;	}.leptons {	background:url('images/particles_leptons.gif');	position:absolute;	top:247px;	left:211px;	width:170px;	height:100px;	display:block;	}.antiquarks {	background:url('images/particles_antiquarks.gif');	position:absolute;	top:401px;	left:20px;	width:191px;	height:104px;	display:block;	}.antileptons {	background:url('images/particles_antileptons.gif');	position:absolute;	top:401px;	left:211px;	width:170px;	height:111px;	display:block;	}.bosons {	background:url('images/particles_bosons.gif');	position:absolute;	top:247px;	left:381px;	width:220px;	height:327px;	display:block;	}.download {	background:url('images/particles_download.gif');	position:absolute;	top:533px;	left:50px;	width:161px;	height:28px;	display:block;	}#over {	display:block;	width:200px;	height:200px;	}