body{
    background-color: #edf7f9;
    font-family: Arial, 宋体, Tahoma;
}

.nav{
    width: 100%;
    height: 80px;
    background-color: #155070;
    padding-left: 50px;
    padding-right: 50px;
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: justify;
    -webkit-justify-content: space-between;
    justify-content: space-between;
    -webkit-box-align: center;
    -webkit-align-items: center;
    align-items: center;
    box-sizing: border-box;
}
.nav_left{
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: justify;
    -webkit-justify-content: space-between;
    justify-content: space-between;
    -webkit-box-align: center;
    -webkit-align-items: center;
    align-items: center;
}
.nav_left img{
    width: 60px;
    height: 60px;
    margin-right: 20px;
}
.nav_left p span{
    font-size: 24px;
    font-weight: bold;
    color: #ffffff;
}
.refresh{
    position: absolute;
    left: 50%;
    top: 50%;
    margin: -6px 0 0 -6px ;

}

.video_top{
    width: 1024px;
    margin: 0 auto;
    height: 50px;
    line-height: 50px;
    font-weight: bold;

}
.video_content{
    width: 1024px;
    margin: 0 auto;
}
.video_fps{
    text-align: right;
    padding-right: 100px;
}
.video_inner{
    text-align: center;
    position: relative;
}