*{
    margin: 0;
    padding: 0;
}
.ai-banner{
    width: 100%;
    height: 500px;
    float: left;
    background-repeat: no-repeat;
    background-size: 100% 100%;
}
.ai-banner3{
    width: 546px;
    height: 271px;
    float: left;
    background-image: url("../images/ban.png");
    position: relative;
    top: 100px;
}
.ai-banner-1{
    width: 1000px;
    height: 500px;
    margin: 0 auto;

}
.ai-banner1{
    width: 40%;
    height: 200px;
    float: right;
    position: relative;
    top: 150px;

}
.ai-banner2 {
    width: 554px;
    height: 269px;
    float: right;
    position: relative;
   top: 200px;
    right: 250px;
}
.ai-banner1 span{
    font-size: 40px;
   position: relative;
    top: 20px;
}
.ai-banner1 p{
    position: relative;
    top: 30px;
    line-height: 40px;
    font-size: 20px;
}
/*.ai-banner1 p span{*/
    /**/
/*}*/


.ai-jieshao{
    width: 100%;
    height: 500px;
    float: left;
}
.ai-jieshao1{
    width: 1000px;
    height: 100%;
    margin: 0 auto;
}
.ai-jieshao-text{
    width: 100%;
    height: 20%;
    text-align: center;
    line-height: 120px;
    font-size: 40px;

}
.ai-jieshao-text span{
    font-size: 20px;
}
.ai-jieshao2{
    width: 100%;
    height: 75%;
    float: left;
    position: relative;
    top: 5%;
}
.ai-jieshao2-left{
    width: 45%;
    height: 100%;
    float: left;
}
.ai-jieshao2-left p{
    font-size: 15px;
    margin-left: 20px;
    line-height: 40px;
    margin-top: 40px;
}
.ai-jieshao2-left p span{
    font-size: 25px;

}
.ai-jieshao2-right{
    width: 55%;
    height: 100%;
    float: right;
}
.ai-jieshao2-right img{
    width: 100%;
    height: 100%;
    background-size: 100% 100%;
    margin-right: 10px;
}
.chang{
    width: 100%;
    height: 600px;
    float: left;
}
.chang1{
    width: 1000px;
    height: 600px;
    margin: 0  auto;
}
.chang1-text{
    width: 100%;
    height: 130px;
    text-align: center;
    line-height: 230px;
    font-size: 40px;
}
.chang2{
    width: 100%;
    height: 480px;
    float: left;
    position: relative;
    top: 5%;
}
.chang2 img{
    width: 65%;
    height: 380px;
    background-size: 100% 100%;
    float: left;
}
.chang2 p{
    width: 35%;
    line-height: 30px;
    font-size: 15px;
    margin-top: 50px;
    float: right;
}
.chang3{
    width: 100%;
    height: 380px;
    float: left;
}
.chang4{
    width: 1000px;
    height: 100%;
    margin: 0 auto;
}
.chang4 img{
    width: 65%;
    height: 100%;
    background-size: 100% 100%;
    float: left;
}
.chang4 p{
    width: 26%;
    line-height: 30px;
    font-size: 15px;
    margin-top: 100px;
    float: right;
   margin-left: 50px;
}
.ceshi{
    width: 100%;
    height: 700px;
    float: left;
    margin-top: 50px;
}
.ceshi1{
    width: 1000px;
    height: 100%;
    margin: 0 auto;
}
.ceshi1-text{
    width: 100%;
    height: 20%;
    text-align: center;
    line-height: 230px;
    font-size: 40px;
}
.ceshi2{
    width: 100%;
    height: 75%;
    float: left;
    position: relative;
    top: 5%;
}
.ceshi2 ul {
    width: 100%;
    height: 100%;
    float: left;
}
.ceshi2 ul li {
    width: 100%;
    height: 23%;
    float: left;
    text-indent: 30px;
    font-size: 15px;
}
.ceshi2 ul li p{
    font-size: 20px;
    text-indent: 30px;

}
.ceshi2 ul li p span{
    font-size: 40px;
    color: orange;
}
.buzhou{
    width: 100%;
    height: 380px;
    float: left;
    margin-top: 50px;
}
.buzhou1{
    width: 1000px;
    height: 100%;
    margin: 0 auto;
}
.buzhou1-text{
    width: 100%;
    height: 20%;
    text-align: center;
    line-height: 120px;
    font-size: 40px;
}
.buzhou2{
    width: 100%;
    height: 75%;
    position: relative;
    top: 5%;
    line-height: 50px;

}
.buzhou2 p {
    font-size: 15px;
    text-indent: 30px;
    position: relative;
    top: 50px;
}