div#about_us>p{
    text-align: center;
    margin-bottom: 15px;
}

div#about_us p:first-child{
    color: #7C87A0;
    font-size: 20px;
    width: 1300px;
    border-bottom: 2px solid #E2E2E2;
    margin: 0 auto;
    margin-top: 30px;
    padding: 20px 0;
}
div#about_us p:nth-child(2){
    color: #D43B33;
    margin: 0 auto;
    margin-top: -25px;
    margin-bottom: 40px;
    /*margin-top: -25px;*/
    background-color: #FFFFFF;
    width: 200px;
    height: 50px;
    line-height: 50px;
    font-size: 21px;
    font-weight: 800;
}
div#about_us p:last-child{
    width: 110px;
    height: 30px;
    margin: 0 auto;
    font-weight: bold;
    border: 1px solid black;
    line-height: 30px;
    border-radius: 15px;
}
div#tab{
    width: 1300px;
    height: 35px;
    margin: 50px auto;
    border-bottom: solid 1px #E2E2E2;
}
div#tab ul{
    width: 375px;
    height: 35px;
    margin: 0 auto;
}
div#tab>ul li{
    float: left;
    width: 105px;
    height: 35px;
    background-color: #626262;
    margin-right: 15px;
    color: white;
    text-align: center;
    line-height: 35px;
    /*border-bottom: solid 1px #E2E2E2;*/
    border: solid 1px #E2E2E2;
}
div#tab>ul li:first-child{
    background-color: white;
    color: red;
    border-bottom: none;
}
div#tab_message{
    width: 800px;
    height: 185px;
    margin: 0 auto;
    margin-bottom: 80px;
}
div#tab_message img{
    float: left;
    display: block;
}
div#tab_message div{
    margin-left: 50px;
    float: left;
}
div#tab_message div p{
    margin-bottom: 10px;
    font-size: 14px;
    height: 14px;
}
div#tab_message div p:nth-child(2n) {
    font-weight: 600;
}
div#project_production{
    width: 100%;
    height: 350px;
    background-image: url("../img/enterprise_culture.png");
    background-repeat: repeat;
    overflow: hidden;
}
div#project_production>p{
    text-align: center;
}
div#project_production>p:first-child{
    margin-top: 35px;
    font-size: 22px;
}
div#project_production p:nth-child(2){
    margin-top: 10px;
    font-size: 24px;
}
div#project_production>ul{
    width: 1010px;
    height: 150px;
    margin:  0 auto;
    margin-top: 45px;
    /*background-color: rebeccapurple;*/
}

div#project_production ul li{
    width: 310px;
    height: 150px;
    float: left;
    margin-left: 5px;
}
div#project_production ul p{
    width: 25px;
    height: 150px;
    float: left;
    line-height: 150px;

}
div#project_production ul p:first-child{
    margin-right: 10px;
    background-image: url("../img/btnleft.png");
}
div#project_production ul p:last-child{
    margin-left: 5px;
    background-image: url("../img/btnright.png");

}

div#project_production>ul li:nth-child(2){
    background-image: url("../img/projectdetails.png");
}

div#project_production>ul li:nth-child(3){
    background-image: url("../img/projectdetails.png");
}
div#project_production>ul li:nth-child(4){
    background-image: url("../img/projectdetails.png");
}
div#project_production>ul li span{
    margin-top: 120px;
    padding-left: 20px;
    width: 290px;
    height: 30px;
    display: block;
    background-color: rgba(64,56,44,0.7);
    color: white;
    line-height: 30px;
}
div#news_message{
    width: 1000px;
    height:460px;
    background-color: white;
    margin:0 auto;
}
div#news{
    /*background-color: #4dfaff;*/
    width: 460px;
    height: 460px;
    float: left;
}
div#news>p{
    width: 460px;
    height: 22px;
    margin-top: 25px;
    font-size: 20px;
}
div#news>p:nth-child(2){
    margin-top: 8px;
    color: red;
    margin-bottom: 20px;
}
div#news>p:last-child{
    margin-top: 20px;
}
div#news>ul{
    width: 460px;
    height: 280px;
}
div#news>ul li{
    width: 460px;
    height: 35px;
    border-bottom: 1px dashed rgba(0,0,0,0.6);
}
div#news>ul li span{
    line-height: 35px;
}
div#news>ul li span:first-child{
    display: block;
    float: right;
    color: rgba(0,0,0,0.6);
}
div#news>ul li span:last-child{
    display: block;
    float: left;
}
div#message{
    /*background-color: blue;*/
    width: 500px;
    height: 460px;
    float: right;
}
div#message>p{
    width: 460px;
    height: 22px;
    margin-top: 25px;
    font-size: 20px;

}
div#message>p:nth-child(2){
    margin-top: 8px;
    color: red;
    margin-bottom: 16px;
}
div#message>form{
    height: 330px;
    width: 500px;
}
div#message>form input{
    width:220px;
    padding-left: 20px;
    height: 40px;
    float: left;
    border: 1px solid rgba(0,0,0,0.3);
    margin-bottom: 10px;
}
div#message>form input:nth-child(2n){
    margin-left: 16px;
}
div#message>form textarea{
    width: 480px;
    height: 175px;
    padding-left: 20px;
    padding-top: 10px;
}
div#message>form input:nth-child(4){
    width: 90px;
}
div#message>form span:first-of-type{
    background-image:  url("../img/vdimgck.jpg");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 80% 80%;
    width: 90px;
    height: 40px;
    margin-left: 10px;
    display: block;
    float: left;
}
div#message>form input:last-child{
    width: 110px;
    height: 35px;
    background-color: red;
    text-align: center;
    float: right;
    margin-right: 5px;
    margin-top: 10px;
    padding-right: 20px;
}

div#message>form span:nth-child(n+7) {
    margin-top: 20px;
    display: block;
    float: left;

}