div{
	float:left;
	border: solid #000 3px;
	text-align:left;
}

.guess_box{
	height:245px;
}

#header{
 	width:100%;
 	border: 0px;
 	height:50px;
}

#main{
	background-color: gray;
	height: 500px;
}

.hover{
	border: solid #f00 3px;
}

.no_hover{
	border: solid #000 3px;
}

.discount{
	border: solid #0f0 3px;
}

.no_discount{
	border: solid #f00 3px;
}