body,th,td,.p1,.p2{font-family:arial}
p,form,ol,ul,li,dl,dt,dd,h3{margin:0;padding:0;list-style:none}
input{padding-top:0;padding-bottom:0;-moz-box-sizing:border-box;-webkit-box-sizing:border-box;box-sizing:border-box}
table,img{border:0}
a { text-decoration: none}
a:link { text-decoration: none;color: white}
　　 a:active { text-decoration:white}
　　 a:hover { text-decoration:none;color: white}
　　 a:visited { text-decoration: none;color: white}

.wrapper{
    width: 100%;
    display: flex;
    justify-content: center;
}

.content{
    width: 1920px;
}

.main-pic{
    display: flex;
    justify-content: center;
}

.top{
    background-size: 100% 100%;
    background-repeat: no-repeat;
    height: 100px;
    width: 1920px;
}

.top_pic{
    background-image: url(./image/top.jpg);
}

.about_top_pic{
    background-image: url(./image/about_top.jpg);
}

.bottom_pic{
    background-size: 100% 100%;
    background-repeat: no-repeat;
    height: 154px;
    width: 1920px;
    background-image: url(./image/bottom.png);
}

.bottom_address{
    width: 1920px;
    /* margin: 0 auto; */
    padding: 50px 0 0 10px;
    color: white;
    text-align: center;
}

.logo{
    height: 100px;
    padding-left: 350px;
    float: left;
}

.top-nav{
    float: left;
    height: 100px;
    color: white;
    font-size: 24px;
    margin-left: 450px;
}

.top-nav li{
    float: left;
    margin-right: 30px;
    line-height: 100px;
    text-align: center;
    
}