#box {
	margin:50px auto;
	padding:2px;
	background-color:#ebebeb;
}
#title {
	text-align:left;
	font-weight:bold;
	font-size:12px;
}
input[type="button"] {
	width:60px;
	height:45px;
	line-height:20px;
	text-align:center;
}
.num {
	border:0px;
	background-color:#fafafa;
}
.symbol {
	background-color:#f3f3f3;
	border:0px;
}
#zhi {
	height:40px;
	width:250px;
	text-align:right;
	border:0px;
	background-color:#ebebeb;
	font-size:30px;
	font-weight:bold;
}
#count {
	height:20px;
	width:250px;
	text-align:right;
	border:0px;
	background-color:#ebebeb;
}