/* 使用说明 */
.explains {
  background-color: #fff;
  margin-bottom: 60px;
  box-shadow: 0px 3px 7px 0px rgba(0, 0, 0, 0.1);
  border-radius: 10px;
}
.explains .explains-li {
  padding: 60px 100px;
}
.explains .explains-li:last-child {
  padding: 40px 100px 200px;
}
.explains .explains-li h3 {
  font-size: 22px;
  font-weight: 700;
  border-bottom: 1px solid #ccc;
  padding-bottom: 10px;
}
.explains .explains-li h3::before {
  display: inline-block;
  content: '';
  width: 5px;
  height: 22px;
  background: #00ACF4;
  border-radius: 3px;
  margin-right: 16px;
  vertical-align: middle;
}
.explains-li li{
	float: left;
	margin: 30px 49px 0 0;
}
.explains-li li:nth-child(5n+5){
	margin-right: 0;
}
.explains-li li img{
	width: 160px;
}
.explains-text p{
	font-size: 15px;
	color: #808080;
	line-height: 44px;
}
.explains-lis div{
	float: left;
	margin: 45px  75px 0 0;
	text-align: center;
}
.explains-lis div:nth-child(4n+4){
	margin-right: 0;
}
.explains-lis div img{
	width: 200px;
}