body {
	margin: 10px;
	padding: 0px;
	font: 12px "宋體",Tahoma,sans-serif;
	text-align: center;
	background: #FFFFFF;
}
h1 {
	font: bold 28px "宋體";
	color: #222222;
	margin: 6px;
	padding: 0px;
}
.ans_normal {
	background: #F0F5FA;
	height: 14px;
	padding: 3px;
	margin: 6px;
	border: 1px solid #8394B2;
}
.ans_error {
	background: #F4E7EA;
	height: 14px;
	padding: 3px;
	margin: 6px;
	border: 1px solid #986265;
}
#line {
	display:inline;
}
.q {
	overflow: hidden;
	float:left;
	text-align: left;
	height: 14px;
	width: 390px;
}
.a {
	overflow: hidden;
	float:left;
	text-align: right;
	height: 14px;
	width: 185px;
}
#expression input{
	font: 14px "宋體",Tahoma,sans-serif;
	color: #222222;
	background: #F0F5FA;
	height: 16px;
	width: 98%;
	padding: 3px;
	margin: 3px 0px 6px 0px;
	border-top: 1px solid #8394B2;
	border-right: 1px none #8394B2;
	border-bottom: 1px solid #8394B2;
	border-left: 1px none #8394B2;
}
#box {
	background: #F0F5FA;
	margin: auto;
	border: 1px solid #C2CFDF;
	width: 600px;
}
#function {
	display:inline;
}
#function ul{
	margin: 0px;
	padding: 0px;
	border-style: none;
	float: left;
}
#function li{
	margin: 3px 3px 3px 3px;
	padding: 2px;
	border: 1px solid #8394B2;
	list-style: none;
	width: 45px;
	cursor: pointer;
}
#function ul.op li{
	width: 69px;
}
#keyboard {
	font-size: 12px;
	margin: 3px;
	padding: 4px 0px 0px;
	border-top: 1px solid #8394B2;
	border-right: 1px none #8394B2;
	border-bottom: 1px none #8394B2;
	border-left: 1px none #8394B2;	
}