.zc_a{
	width: 100%;
	/*height: 100%;*/
	height:calc(100% - 210px);
	/*overflow: hidden;*/
	background: #f3f3f3;
	padding-top: 30px;
}
.zc_b{
	width: 400px;
	height: 500px;
	border: solid 1px gainsboro;
	margin: 0 auto;
	background: white;
	border-radius: 5px;
	box-shadow: 2px 2px 20px 0 #cdcbcb;
	
}
.zc_b h4{
	background: #bf0312;
	color: white;
	padding: 10px;
	font-size: 18px;
	font-family: "黑体";
	text-align: center;
}
/*input[type="text"]
{
	width: 100px;
}*/
#vv{
	/*margin: 0 auto;*/
	margin-bottom: 15px;
	width: 300px;
	
	border:solid 1px gainsboro;
	box-shadow: 1px 1px 4px 0 #eceaea;
	border-radius: 3px;
	outline: none;
	font-size: 14px;
	padding: 10px;
}
form{
	width: 320px;
	margin: 0 auto;
	/*border: solid 1px red;*/
}
#va{
	margin-bottom: 30px;
	width: 100px;
	border:solid 1px gainsboro;
	box-shadow: 1px 1px 4px 0 #eceaea;
	border-radius: 3px;
	outline: none;
	font-size: 14px;
	padding: 10px;
	float: left;
	
}

#ti{
	width: 320px;
	padding: 10px;
	background: #c8c6c6;
	color: white;
	border: none;
}
#ti:hover{
	background-color: #bf0312;
}