body{
    font-family: '微软雅黑', Tahoma, Verdana, Arial, Helvetica, sans-serif;
}
#app-tu1,#app-tu3,#app-tu5{
width: 100%;
    height: 400px;
    margin: auto ;
    text-align: center;
}

#app-tu1 .app-tu1-info{display: inline-block;line-height: 30px;height:auto;text-align: left;font-size: 16px;font-weight: 500;letter-spacing: 1.5px;position: relative;
    top: 80px;padding-right: 20px;}
#app-tu1 .app-title1{margin-top: 30px;margin-bottom: 40px;}
#app-tu1 .app-tu1-info p {  margin: 0 0 18px;  }
#app-tu2,#app-tu4{background: black;height: 360px;text-align: center}
#app-tu2 .app-tu2-info{display: inline-block;color: #ffffff;line-height: 25px;text-align: left;letter-spacing: 1.5px;padding-left: 20px;position: relative;top: -42px;}
#app-tu2 .app-title2{  margin-bottom: 30px;  margin-top: 10px;}
#app-tu2 img{vertical-align: baseline;position: relative;top: 74px;}
#app-tu3 .app-tu3-info{display: inline-block;letter-spacing: 1.5px;line-height: 20px;font-size: 16px;text-align: left;margin-right: 20px;position: relative;top: -20px;}
#app-tu3 .app-title3{margin-bottom: 30px;}
#app-tu3 img{vertical-align: baseline;position: relative;top: 32px;}
#app-tu3 .app-p3{margin-bottom: 30px!important;;}
#app-tu3 p{margin: 0px 0px 2px;}
#app-tu4 .app-tu4-info{display: inline-block;text-align: left;line-height: 25px;margin-left: 20px;letter-spacing: 1.5px;font-size: 15px;color: #fff;position: relative;left: -60px;top: -10px;}
#app-tu4 .app-tu4-info h2{margin-top: 10px;font-size: 38px;margin-bottom: 20px;}
#app-tu4 img   {width: 400px;position: relative;top: 50px;}
#app-tu5 .app-tu5-info{display: inline-block;line-height: 28px;text-align: left;letter-spacing: 1.5px;margin-left: 20px;font-size: 18px;}
#app-tu5 h1{font-size: 42px;margin-bottom: 20px;}
#app-tu5 img{position: relative;left: -40px;height: 400px;}
#app-tu6{background: black;text-align: center;height: 400px;color: #ffffff;}
#app-tu6 .app-tu6-info{padding-top: 20px;margin-bottom: 40px; font-size: 18px;letter-spacing: 1.5px;}
#app-tu6 h2{margin-bottom: 30px;font-size: 40px}
#app-tu6 img{width:40%;}