.first_level .header_without_bg {
    float: left;
    width: 1200px;
    height: 100px;
    border: #0f0 solid 0px;
}

.detail_page_wrapper {
    /*float: left;*/
    width: 1200px;
    height: 750px;
    border: #0f0 solid 0px;
    padding: 0px;
}

.detail_page_wrapper .title {
    /*float: left;*/
    float: left;
    width: 100%;
    height: 100px;
    line-height: 100px;
    text-align: center;
    color: #666;
    font-size: 32px;
    font-weight: bold;
}

.image_wrapper_pc_detial {
    float: left;
    /*margin-top:-100px; */
    margin-left: 0px;
    width: 800px;
    height: 600px;
    border: #0f0 solid 0px;
    background-image: url('../images/image_pc_detail.png');
    /*background-size: 800px 600px;*/
    background-size: 750px auto;
    background-repeat: no-repeat;
    background-position: center center;
}


.image_wrapper_mobile_detail {
    float: left;
    width: 400px;
    height: 600px;
    border: #0f0 solid 0px;
    background-image: url('../images/image_mobile_detail.png');
    /*background-size: 300px 600px;*/
    background-size: 300px auto;
    background-repeat: no-repeat;
    background-position: center center;
}


.list_page_wrapper {
    /*float: left;*/
    width: 1200px;
    height: 750px;
    border: #0f0 solid 0px;
    padding: 0px;
}

.list_page_wrapper .title {
    /*float: left;*/
    float: left;
    width: 100%;
    height: 100px;
    line-height: 100px;
    text-align: center;
    color: #666;
    font-size: 32px;
    font-weight: bold;
}
.image_wrapper_pc_list {
    float: left;
    /*margin-top:-100px; */
    margin-left: 0px;
    width: 800px;
    height: 600px;
    border: #0f0 solid 0px;
    background-image: url('../images/image_pc_list.png');
    /*background-size: 800px 600px;*/
    background-size: 750px auto;
    background-repeat: no-repeat;
    background-position: center center;
}


.image_wrapper_mobile_list {
    float: left;
    width: 400px;
    height: 600px;
    border: #0f0 solid 0px;
    background-image: url('../images/image_mobile_list.png');
    /*background-size: 300px 600px;*/
    background-size: 300px auto;
    background-repeat: no-repeat;
    background-position: center center;
}

.width_1200_wrapper .title {
    float: left;
    width: 100%;
    height: 100px;
    line-height: 100px;
    text-align: center;
    color: #666;
    font-size: 32px;
    font-weight: bold;
}
.demo_video_wrapper {
    width: 1200px;
    height: 550px;
}

.demo_video_wrapper .left {
    float: left;
    width: 850px;
    height: 500px;
    background-image: url("../images/icons8-youtube-500.png");
    background-repeat: no-repeat; 
    background-position: center center; 
    background-size:200px 200px;
    border: #ddd solid 1px;     
}

.demo_video_wrapper .right {
    float: right;
    width: 300px;
    height: 500px;
    background-image: url("../images/icons8-youtube-500.png");
    background-repeat: no-repeat; 
    background-position: center center; 
    background-size:200px 200px;
    border: #ddd solid 1px;     
}

.video_model_wrapper {
    width: 1200px;
    height: 550px;
}

.video_model_wrapper .left {
    float: left;
    width: 850px height:500px;
    background-image: url("../images/icons8-youtube-500.png");
    background-repeat: no-repeat; 
    background-position: center center; 
    background-size:200px 200px;
    border: #ddd solid 1px;     
}

.video_model_wrapper .right {
    float: right;
    width: 300px height:500px;
    background-image: url("../images/icons8-youtube-500.png");
    background-repeat: no-repeat; 
    background-position: center center; 
    background-size:200px 200px;
    border: #ddd solid 1px;     
}

.online_demo_wrapper {
    /*float: left;*/
    width: 1200px;
    height: 300px;
    border: #0f0 solid 0px;
    padding: 0px;
}

.online_demo_wrapper .title {
    /*float: left;*/
    float: left;
    width: 100%;
    height: 100px;
    line-height: 100px;
    text-align: center;
    color: #666;
    font-size: 32px;
    font-weight: bold;
}

.video_demo_wrapper {
    /*float: left;*/
    width: 1200px;
    height: 500px;
    border: #0f0 solid 0px;
    padding: 0px;
}

.video_demo_wrapper .title {
    /*float: left;*/
    float: left;
    width: 100%;
    height: 100px;
    line-height: 100px;
    text-align: center;
    color: #666;
    font-size: 32px;
    font-weight: bold;
}

.online_demo {
    width: 100%;
    height: auto;
}

.online_demo table {
    width: 100%;
    font-family: verdana, arial, sans-serif;
    font-size: 14px;
    color: #333333;
    border-width: 1px;
    border-color: #ccc;
    border-collapse: collapse;

}

.online_demo table th {
    background: #0099A8;
    border-width: 1px;
    padding: 8px;
    border-style: solid;
    border-color: #ccc;
    color: #fff;
}

.online_demo table td {
    background: #eee;
    border-width: 1px;
    padding: 8px;
    border-style: solid;
    border-color: #ccc;
}

.online_demo table td a {
    color: #0099A8;
    font-weight: bold;
}