*{
	margin: 0;
	padding: 0;
	border: 0;
	outline: none;
	text-decoration: none;
	list-style: none;
	box-sizing: border-box;
}
body{
	background:rgba(247,247,247,1);
}
/*头部*/
nav{
	width: 100%;
	min-width: 1200px;
	height: 60px;
	background: #26BBFF;
	box-shadow:0px 2px 20px 0px rgba(53,53,53,0.28);
}
nav div{
	width: 1200px;
	height: 60px;
	margin: 0 auto
}
nav div p{
	color: #fff;
	line-height: 60px;
	font-size: 22px;
}
/*测试内容*/
.mian{
	width: 1200px;
	height: auto;
	margin: 0 auto;
	margin-top: 20px;
	border-radius: 4px;
	background: #fff;
	padding: 15px 18px;
}
.mian>h1{
	width: 100%;
	height: 39px;
	line-height: 39px;
	color: #323232;
	font-weight: bold;
	font-size: 24px;
}
.mian .help_cont{
	padding: 17px 0;
}
.help_cont>div{
	margin-bottom: 25px;
}
.help_cont .help_cont_t{
	font-size: 18px;
	color: #323232;
	font-weight: bold;
	margin-bottom: 14px;
}
.help_cont .help_cont_c{
	font-size: 16px;
	color: #323232
}
.help_cont_c img{
	width: auto;
	height: auto;
	max-width: 100%;
	max-height: 100%;
}