img{
  outline: none;
  border: none;
}
#corpus{
 background:#000;
}
#wrap{
 width:100%;
 width:810px;
 margin:0 auto;
 text-align:center;
 position:relative;
}

#video_box{
 width:448px;
 height:273px;
 background:transparent;
 position:absolute;
 top:911px;
 left:181px;
 margin:0;
}