.solution,
.about,
.flow_img,.case {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 1180px;
}
/*  */
.case{
    margin: 60px 0;
}
.demo_content{
    margin-top: 60px;
    display: flex;
    width: 100%;
    justify-content: space-between;
}
.case .demo_list{
    display: flex;
    flex-direction: column;
    align-items: center;
}
.demo_content span{
    font-family: 'AlibabaPuHuiTi-Regular';
	font-size: 16px;
 	line-height: 16px;
     color: #666666;
     margin-top: 10px;
}