*{
    margin: 0 auto;
    padding: 0;
    
    }
    
    a{
        text-decoration: none;
        color: #000;
    }
    
    .nav{
    width: 100%;
    height: 90px;
    position: relative;
    }
    
    .nav ul{
    width: 800px;
    height: 80px;
    list-style: none;
    position: absolute;
    right: 300px;
    bottom: 0;
    
    }
    
    .nav ul li{
        float: left;
        width: 160px;
        height: 80px;
        font-size: 20px;
        list-style: none;
        line-height: 80px;
        text-align: center;
    }
    
    .logo{
        width: 220px;
        height: 60px;
        position: absolute;
        left: 200px;
        top: 20px;
    }
    
    .nav .logo img{
        width: 220px;
        height: 60px;    
    }

    .banner{
        width: 100%;
        height: 300px;
        background-color: brown;
        position: relative;
        }
        
        .banner-pic{
        width: 100%;
        height: 300px;
        }
        
        .banner-pic img{
            width: 100%;
            height: 300px; 
        }
        
        .banner .fu{
        width: 200px;
        height: 300px;
        position: absolute;
        background-color: rgb(161, 217, 219);
        left: 300px;
        top: 0px;
        }
        
        .banner .fu div{
        width: 200px;
        height: 75px;
        }
        
        
        .banner .fu div a{
        font-size: 19px;
        text-align: center;
        line-height: 50px;
        color: #000;
        display: block;
        }


        .content{
width: 1200px;
height: 200px;
margin: 50px auto;
        }

        .content-items{
width: 400px;
height: 200px;
float: left;
border-right: 1px dashed #000;
box-sizing: border-box;
        }
    
        .content-items p{
            text-align: center;
        }


        
.sub-nav{
    width: 1200px;
    height: 30px;
    text-align: center;
    font-size: 25px;
    color: #000;
    margin: 50px auto 50px;
    }

    .heng{
width: 100%;
height: 200px;

    }

    .heng img{
        width: 100%;
        height: 200px;
        
            }


            ul{
width: 1000px;
height: 100px;
margin: 0 auto;

            }

            ul li{
width: 200px;
height: 50px;
text-align: center;
line-height: 50px;
font-size: 15px;
color: #000;
float: left;
list-style: none;
margin-top: 50px;
            }



            .dibu{
width: 500px;
margin: 150px auto 0px;
height: 30px;
            }

            .dibu span,a{
                color: #666;
                font-size: 15px;
            }