.video_box {
    display: block;
    border: 1px solid #ddd;
    padding: 15px;
    border-radius: 8px;
    background-color: #fdfdfd;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}
.video_box .box_left_side {
    flex: 1;
}
.video_box .box_right_side {
    flex: 1;
    padding-left: 15px;
}