.ca {
	height: 480px;
	width:460px;
	float: left;
}
.cb {
	height: 480px;
	width:175px;
	background-image: url(../img/gama.JPG);
	background-repeat: no-repeat;
	margin-right: 5px;
	float: left;
}
.cc {
	height: 480px;
	background-image: url(../img/daidogei.JPG);
	background-repeat: no-repeat;
	width: 180px;
	float: left;
}
.cd {
	height: 480px;
	width:455px;
	float: left;
}
.kai {
   clear: both;	
}