*{
    margin: 0;
    padding:0;
}
body{
    background-color: #f6f9fa;
    margin: 0px auto;
    padding: 0;
    float: left;
    width: 100%;

}
a:link,a:visited {
    text-decoration: none;
    color: #212121;
}

.body-all{
   margin: 0px auto;
   width: 900px;
   height: auto;
}
/*导航*/
.top_bar{
    width: 900px;
    height: 80px;
    background-color: #212121;
    position: fixed;
    top: 0;
    z-index: 999;
    box-shadow: 2px 5px 5px #b3b3b3;
    float: left;

}

.top_bar .top_ob{
    list-style-type: none;
    height: 50px;
    float: left;
    line-height: 80px;
    margin: 15px 24px 15px 24px;



}
.top_block{
    width: 130px;
    height: 50px;
    float: left;
    line-height: 50px;
    /*text-align: center;*/
    margin-left: 12px;

}
.top_block a{
    width: 130px;
    height: 50px;
    float: left;
}
.top_box{
    width: 130px;
    /*height: 50px;*/
    float: left;
    color: white;
    opacity: 0.7;
    font-family:  "宋体", serif, Arial, Helvetica;
    font-size: 20px;
}


.top_box:hover{
    color: white;
    opacity: 1;
}
/*内容*/

.container{
    width: 900px;
    height: auto;
    text-align: center;
    position: relative;
    float: left;
    margin-top: 150px;
}
.container img{
    cursor: pointer;
    width: 100%;
    transition: all 0.8s ease;

}

.modal {    position: fixed;         left: 0;    top: 0;    width: 100%;    height: 100%;    overflow: auto;     background-color: rgba(200, 200, 200, 0.6);     backdrop-filter: blur(5px);        display: none;    justify-content: center;     align-items: center; }.modal-content {    margin: auto;    display: block;    width: 80%;     max-width: 900px;     max-height: auto;     object-fit: contain;      animation-name: zoomIn;    animation-duration: 0.4s;}.close-btn {    position: absolute;    top: 20px;    right: 35px;    color: #f1f1f1;    font-size: 40px;    font-weight: bold;    cursor: pointer;    transition: 0.3s;}.close-btn:hover,.close-btn:focus {    color: #bbb;    text-decoration: none;    cursor: pointer;}@keyframes zoomIn {    from {transform: scale(0.8); opacity: 0;}    to {transform: scale(1); opacity: 1;}}@media only screen and (max-width: 700px) {    .modal-content {        width: 95%;     }}.container img:hover{
    transform:scale(1.05);
    -webkit-transform: scale(1.05);
    -moz-transform: scale(1.05);
    -ms-transform: scale(1.05);
    -o-transform: scale(1.05);
    z-index: 2;
}



.content_box:hover{
    opacity: 0.8;

}
.box-border{
    width: 900px;
    height: auto;
    float: left;

}
.container .box-border .content_box{
    float:left;
    position: relative;
    width: 286px;
    height: 161px;
    margin: 7px 7px 5px 7px;
    border-radius: 4px;
    box-shadow: 0 0 0.5px #50442c;

}
.container .box-border .content_box .box-left .box_video{
    width: 286px;
    height: 161px;
    float: left;
    position: relative;
    border-radius: 4px;
    color: white;

}
.container .box-border .content_box .box-left .box_video p{
    width: 286px;
    height: 30px;
    float: left;
    position: relative;
    opacity: 1;
    color: white;
    text-align: center;
    margin-top:123px;

}

.container .box-border .content_box .box-left .box_video p:hover{
    color: red;
    opacity: 1;
    -webkit-transform: scale(1.35,1.35);
    -moz-transform: scale(1.35,1.35);
    -ms-transform: scale(1.35,1.35);
    -o-transform: scale(1.35,1.35);
    transform: scale(1.35,1.35);
    transition-duration: 500ms;
    transition-delay: 100ms;
}

.container .box-border .content_box .box-left{
    float:left;
    width: 286px;
    height: auto;
}

.container .box-border .content_box .box-left a{
    float:left;
    width: 286px;
    height: auto;
}

.container .body_bar{
    width: 900px;
    height: auto;
    text-align: center;
    position: relative;
    float:left;
}
.container .body_bar2{
    width: 900px;
    margin-left:350 px;
    height: auto;
    text-align: center;
    position: relative;
    float:left;
}
.container .body_bar .bar1 p{
    text-align: left;
    margin-left: 15px;
    opacity: 0.7;
    font-family:  "宋体", serif, Arial, Helvetica;
    font-size: 20px;
}
.container .body_bar .bar1{
    cursor: pointer;
    width: auto;
    height: 20px;
    margin: 10px 10px 10px 0px;
    text-align: center;
    position: relative;
    float:left;

}
.container .body_bar2 .bar2 p{
    text-align: center;
    opacity: 0.7;
    font-family:  "宋体", serif, Arial, Helvetica;
    font-size: 20px;
    border: 1.5px solid black;
    border-radius: 2px;
}
.container .body_bar2 .bar2{
    cursor: pointer;
    width: 100px;
    height: 20px;
    margin: 10px;
    text-align: center;
    position: relative;
    float:left;


}
.container .body_bar .bar3{
    width: 900px;
    margin: 10px 0;
    height: auto;
    text-align: center;
    position: relative;
    float: left;
}
.container .body_bar .bar3 p{
    text-align: left;
    opacity: 0.9;
    font-family: Arial;
    font-size: 15px;
    line-height:22px;
    text-align:justify;
}


.container .body_bar .bar1 p:hover{
               color: red;
               opacity: 1;
}
.container .body_bar2 .bar2 p:hover{
               color: red;
               opacity: 1;
               border: 1.5px solid red;
}

.container .body_bar .bar2{
    width: 900px;
    height: 20px;
    margin: 30px 0 20px 0;
    text-align: center;
    position: relative;
    float: left;
}
.container .body_bar .bar2 p{
    text-align: center;
    opacity: 0.7;
    font-family:  "宋体", serif, Arial, Helvetica;
    font-size: 20px;
}

.container .class_1{
    background-color: #2b2b2b;
    height: 50px;
    width: 900px;
    color: white;
    text-shadow: 0 0 1px #5bc0de;
    font-size: 20px;
    font-family:  "宋体", serif, Arial, Helvetica;
    text-align: left;
    line-height:50px;
    position: relative;
    float: left;
    margin: 20px 0 10px 0;


}
.container .class_1:hover{
    color: aquamarine;
}

.container .arr-border .box_border .img-box{
     width: 205px;
     height: auto;
     float: left;
     overflow: hidden;
     cursor: pointer;

}
.container .arr-border .box_border .img-box img{
    display: block;
    width: 100%;
    height: 100%;
    transition: all 0.8s ease;
}
.container .arr-border .box_border{
    width: 205px;
    height: auto;
    float: left;
    margin: 10px;
}
.arr-border{
    width: 900px;
    height: auto;
    float: left;
}
.container .arr-border .box_border p{
    margin-top: 10px;
    float: left;
    width: 205px;

}


/*脚部信息*/

.footing{
    width: auto;
    height: 60px;
    background-color: #f5f8f9;
    margin-top: 100px;

    float: left;
    position: relative;
    margin-top: 100px;

}
.footing .footing_bottom{
    width:900px;
    background-color: #f5f8f9;
    float: left;
    height: 40px;}

.footing .footing_bottom .foot_cell{
    width:130px;
    float: left;
    height:20px;
    font-family:  "宋体", serif, Arial, Helvetica;
    font-size: 15px;
    margin: 10px 0 10px 24px;
    cursor: pointer;
    opacity: 0.7;
}

.footing .footing_bottom .foot_cell1{
    width:260px;
    height:20px;
    float: left;
    font-family:  "宋体", serif, Arial, Helvetica;
    font-size: 15px;
    margin: 10px 10px;
    cursor: pointer;
    opacity: 0.7;
}
.footing .footing_bottom .foot_cell .foot_cell2{
   width:130px;
   float: left;
   cursor: pointer;
   opacity: 0.5;
}
.footing .footing_bottom .foot_cell a{
    width:130px;
    height:20px;
    float: left;
}
.footing .footing_bottom .foot_cell3{
    width:60px;
    height:20px;
    float: left;
    margin: 12px 12px;
    opacity: 0.7;
 }