.center{
    width: 100%;
    height: 25rem;
    background: url("..//imgage/yy7.png") no-repeat center; 
    background-size: cover;
}
.span{
    width: 50%;
    color: #fff;
    padding-top: 5%;
    margin-left: 15%;
}
.span h3{
    color: #fff;
    font-size: 2.5rem;
}
.span p{
    font-size: 1.5rem;
    color: #fff;
    line-height: 3.5rem;
    font-weight: bolder;
}
.centerbtn{
    padding-top:5rem; 
}
.btn2{
  
    height: 2.5rem;
    border-radius: 0.5rem;
    color: #0586DA;
    background-color: #fff;
    border: none;
    font-size: 1.2rem;
    padding: 0 20px;
    font-weight: bolder;
    box-shadow: 0px 0px 10px 3px #1aabed;
}
.shadow{
    width: 100%;
    background-color: #F3F8FE;
}
.centerdiv{
    width:72%;
    margin: auto;
   
    padding-top: 50px;
}
.centerdivbtn{
    border-radius: 2.5rem;
   font-size: 1rem;
   height: 2rem;
    padding: 0 20px;
    background-color: #243058;
    color: #fff;
}
.centerdiv1{
    width: 100%;
  overflow: hidden;
  padding:50px 0 50px 0; 
}
.son1{
    width: 33%;
    float: left;
 
}
.son1 img{
    float: left;
}
.son1 h3{
    line-height: 116px;
    color: #0D45D1;
    font-size: 1.5rem;
}
.son1 li{
 clear: both;
color: #2C3158;
font-size: 1rem;
line-height: 2rem;
margin-left: 20px;
width: 64%;
padding: 5px;
}

.son3{
    clear: both;
    width: 33%;
    float: left;
    padding-top: 20px;
}
.son3 img{
    float: left;
}
.son3 h3{
    line-height: 116px;
    color: #0D45D1;
    font-size: 1.5rem;
}
.son3 li{
 clear: both;
color: #2C3158;
font-size: 1rem;
line-height: 2rem;
margin-left: 20px;
width: 60%;
padding: 5px;
}

.son4{
    width: 33%;
    float: left;
    padding-top: 20px;
}
.son4 img{
    float: left;
}
.son4 h3{
    line-height: 116px;
    color: #0D45D1;
    font-size: 1.5rem;
}
.son4 li{
 clear: both;
color: #2C3158;
font-size: 1rem;
line-height: 2rem;
margin-left: 20px;

padding: 5px;
}

.centerdiv123{
    width:72%;
    margin: auto;
    padding-top: 80px;
}
.centerdiv4{
    width: 100%;
  
}
.son2{
    width: 25%; float: left;
    padding: 50px 0 100px 0;
}
.son2 img{
    width: 50%;
    margin-left: 35px;
   
}
.son2 p{
    font-size: 1.5rem;
    line-height: 5rem;
    color: #19254D;
    font-weight: bolder;
}
@media (min-width: 100px) and (max-width: 1700px){
    
    .span{
        width: 85%;
        margin-left: 14%;
        padding: 100px 0;
    }
    .son1  li{
        width: 80%;
        font-size: 0.9rem;
    }
    .son3 li{
        width: 80%;
        font-size: 0.9rem;
    }
    .son4 li{
        width: 80%;
        font-size: 0.9rem;
    }
    .span h3{
        font-size: 2rem;
    }
  
       
        .son2 img{
            width: 80%;
        }
        .son2 p{
            font-size: 1.2rem;
            text-align: center;
        }
        .centerbtn{
            padding-top: 6rem;
        }
}
@media (min-width: 100px) and (max-width: 1300px){
    .span{
        width: 70%;
    }
    .centerdiv {
        width: 90%;
    }
    .centerdivbtn{
        margin-left: 10%;
    }
    .centerdiv1{
        padding: 50px 0 20px 0;
    }
    .son1{
        width: 50%;
        height: 15rem;
    }
   
    .son1 li{
     font-size: 0.8rem;
     width: auto;
    }
    .son1 h3{
        font-size: 1rem;
    }
    .son3{
        width: 50%;
        clear: none;
        height: 15rem;
        padding-top: 0;
    }
    .son3 li{
     font-size: 0.8rem;
     width: auto;
    }
    .son3 h3{
        font-size: 1rem;
    }
   
    .son4{
        width: 50%;
        height: 15rem;
    }
    .son4 li{
     font-size: 0.8rem;
     width: auto;
    }
    .son4 h3{
        font-size: 1rem;
    }
   .son1 ul{
       width: 60%;
       margin: auto;
   }
   .son3 ul{
    width: 60%;
    margin: auto;
}
.son4 ul{
    width: 60%;
    margin: auto;
}
.son2 p {
    font-size: 0.8rem;}
}
@media (min-width: 100px) and (max-width: 900px){
    .son1{
        height:18rem;
    }
    .son1 li{
        width: auto;
    }
    .son3{
        height:18rem;  
    }
   .son4 li{
       width: auto;
   }
   
}
@media (min-width: 100px) and (max-width: 700px){
    .centerdiv {
        width: 80%;
    }
    .centerdivbtn{
        margin-left: 0px;
    }
    .span{
        width: 90%;
       padding-top: 100px;
       margin-left: 10%;
    }
    .span h3{
        font-size: 1.5rem;
    }
    .span p{
        font-size: 1.2rem;
    }
    .son1 {
        width: 100%;
        height: 15rem;
    }
    .son1 ul{
        width: 40%;
        margin: auto;
    }
    .son3 {
        width: 100%;
        height: 15rem;
    }
    .son3 ul{
        width: 40%;
        margin: auto;
    }
    .son4 {
        width: 100%;
        height: 15rem;
    }
    .son4 ul{
        width: 40%;
        margin: auto;
    }
    .centerdiv123{
        width: 80%;
        padding-top: 50px;
    }
    .son2{
        width: 50%;
    }
    
}
@media (min-width: 100px) and (max-width: 700px){
    .son1{
        height: 100%;
    }
    .son3{
        height: 100%;
    }
    .son4{
        height: 100%;
    }
    .son1 ul{
        width: 100%;
    }
    .son3 ul{
        width: 100%;
    }
    .son4 ul{
        width:100%;
    }
    .centerdivbtn {
        border-radius: 2.5rem;
        font-size: 0.8rem;
        height: 2rem;
        padding: 0 10px;
        background-color: #243058;
        color: #fff;
      
    }
    .son2{
        padding: 0;
        padding-top: 5%;
    }
}