.khung_trai_size
{
width:208px;
height:auto;
}
.khung_trai_tieude
{
    width:198px;
    height: 23px;
    float: left;
    clear: right;
    font-size: 14px;
    color: #FFFFFF;
    font-weight:normal;
    text-transform: uppercase;
    padding-left: 30px;
    padding-top: 7px;
    background-image: url("../Home_image/kimcuongxanh/Menu%20Doc/tieude_tintuc_background.jpg");
}
.khung_trai /*khung ben trai*/
{
    width:100%;
    padding: 5px;
    float: left;
    clear: right;
    background-color: #FFFFFF;
    border: 1px solid #E4E4E4;
    border-radius: 5px;
    margin-bottom: 15px;
    
}
.khung_giua /*Khung san pham */
{
    padding: 5px;
    float: left;
    clear:left;
    width: 100%;
    background-color: #FFFFFF;
    border: 1px solid #E4E4E4;
    border-radius: 5px;
    margin-bottom: 15px;
    margin-left:20px;
}

#youtube {
   margin-left: auto;
    margin-right: auto;
    width: 840px;
    float: left;
    background-color: white;
}
.youtube {
   margin-left: auto;
    margin-right: auto;
    width: 840px;
    float: left;
    background-color: white;
}
.yotube_left{
    width: 272px;
    float: left;
    background-color: white;
    margin-left:5px;

}
#main_youtube {
   margin-left: auto;
    margin-right: auto;
    width: 840px;
    float: left;
  
}
.youtube_product{
    width: 260px; float: left; margin-right: 10px; height: 148px
}