*{
    margin: 0;
    padding: 0;
    list-style: none;
    text-decoration: none;
}
/* logo开始 */
.logo{
    width: 1440px;
    height: 50px;
    margin: 0 auto;
    padding: 35px 0;
    margin-top: 10px;
}
.logo img{
    display: block;
    height: 50px;
    width: 201px;
    margin: 0 auto;
}

/* logo结束  */
/* nav区开始 */
.nav{
    width: 100%;
    height: 30px;
}
.navbox{
    width: 1440px;
    height: 30px;
    margin: 0 auto;
}
.navbox ul{
    width: 560px;
    height: 30px;
    margin: 0 auto;
}
.navbox ul li{
    float: left;
    margin: 0 27px;
}
.navbox ul li a{
    font-size: 16px;
    font-family: "华文仿宋";
    color: #000;
    line-height: 25px;
}
.navbox .underline{
    display: none;
    /* display: block; */
    height: 1px;
    background: #000000;
}
/* nav区结束 */
/* banner开始 */
.banner{
    height: 559px;
    width: 1297px;
    margin: 0 auto;
    margin-top: 60px;
}
.banner img{
    height: 559px;
    width: 1297px;
}
/* banner结束 */
/* main区开始 */
.main{
    width: 1320px;
    height: 420px;
    border-bottom: 1px solid rgb(221, 221, 221);
    margin: 0 auto;
}
.main-title{
    width: 900px;
    margin: 0 auto;
    margin-top: 50px;
}
.main-title .span1{
    font-family:宋体;
    font-size:30px;
    font-weight:bold;
    font-style:normal;
    color:#333333;
    text-align: center;
    display: block;
    margin-bottom: 30px;
}
.main-title .span2{
    text-align: center; 
    letter-spacing: 2px; 
    line-height: 28px;
    font-size: 16px;
    color: #999;
    display: block;
    width: 770px;
    margin: 0 auto;
}
.mian-img{
    height: 152px;
    width: 770px;
    margin: 0 auto;
    margin-top: 32px;
}
.mian-img img{
    display: block;
    height: 152px;
    width: 366px;
    margin: 0 auto;
}


/* main区结束 */
/* container开始 */
.container{
    height: 343.5px;
    width: 1320px;
    margin: 0 auto;
    padding: 36px 40px;
    display: flex;
    justify-content: space-between;
    align-content: space-between;
    flex-wrap: nowrap;
}
.container .container-item{
    height: 100%;
    width: 25%;
    /* background-color: bisque; */
}
.container-item .item-img{
    height: 200px;
    width: 100%;
    /* background-color: palegreen; */
}
.container-item .item-img img{
    display: block;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    margin: 0 auto;
}
.container-item .item-content{
    height: 60px;
    width: 100%;
}
.container-item .item-content .span1{
    font-family:tahoma;
    font-size:18px;
    font-weight:normal;
    font-style:normal;
    color:#333333;
    display:block;
    padding:10px 0 10px 0;
    text-align: center;
}
.container-item .item-content .span2{
    font-size:13px;
    font-weight:normal;
    font-style:normal;
    color:#bababa;
    display:block;
    text-align: center;
}
/* container结束 */
/* contact开始 */
.contact{
    width: 740px;
    height: 316px;
    /* background-color: aquamarine; */
    margin: 0 auto;
    padding: 0 40px;
}
.contact-title{
    font-family:宋体;
    font-size:30px;
    font-weight:bold;
    font-style:normal;
    color:#000000;
    padding:0 0 15px 0;
    display:block;
    text-align: center;
}
.contact-text{
    margin-top: 15px;
}
.contact-text span{
    display: block;
    text-align: center; 
    letter-spacing: 1px;
    font-size: 14px;
    color: #666;
    line-height: 26px;
}
.contact-input{
    position: relative;
    width: 652px;
    margin: 0 auto;
    margin-top: 66px;
}
.input-left{
    position: absolute;
    left: 0;
}
.input-left input{
    height: 57px;
    width: 510px;
    border: 1px solid rgb(222, 222, 222);
    padding-left: 5px;
}
input:focus{
    outline: none;
}
.input-left .span1{
    font-size: 15px;
    color: #666;
    position: absolute;
    left: 30px;
    line-height: 57px;
}
.input-left .span2{
    font-size: 15px;
    color: red;
    position: absolute;
    left: 94px;
    line-height: 57px;
}
.input-right{
    position: absolute;
    right: 0;
}
.input-right input{
    font-size: 15px;
    color: #fff;
    background-color: #000;
    text-align: center;
    display: block;
    width: 140px;
    height: 59px;
    letter-spacing: 5px;
    border: none;
}
/* contact结束 */
/* bottom开始 */
.bottom{
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-content: space-between;
    flex-wrap: nowrap;
}
.bottom-item{
    width: 12.5%;
    height: 30%;
}
.bottom-item img{
    height: 100%;
    width: 100%;
}

/* bottom结束 */
/* fotter开始 */
.footer{
    width: 100%;
    height: 26px;
    padding: 30px 0;
}
.footer-container{
    width: 1320px;
    margin: 0 auto;
    /* background-color: bisque; */
    height: 26px;
    position: relative;
}
.footer-container .span1{
    display: inline-block;
    color: #999;
    font-size: 13px;
    line-height: 26px;
    position: absolute;
    left: 0;
}
.footer-container .span2{
    display: inline-block;
    height: 21px;
    width: 179px;
    padding: 2.5px 0;
    margin-left: 50px;
    position: absolute;
    left: 570px;
}
.footer-container .span2 img{
    height: 21px;
    width: 179px;
}
.footer-container .span3{
    font-size: 13px;
    color: #999;
    position: absolute;
    right: 0;
    line-height: 26px;
}
/* fotter结束 */

.top{
    background-color: #606060;
    width: 40px;
    height: 40px;
    position: fixed;
    bottom: 50px;
    right: 20px;
    opacity: 0;
    cursor: pointer;
}
.top span{
    font-size: 20px;
    width: 30px;
    margin: 0 auto;
    display: block;
    transform: rotate(270deg);
    color: #fff;
    font-weight: bold;
}