#wrapper{
postion:relative;
}

#header{
width:850px;
text-align:center;
font-size:36px;
font-weight:bold;
color:Red;
}
#video  {
width:500px;
padding-top:50px;
margin-top:50px;
margin-left:auto;
margin-right:auto;
}
#video1  {
width:500px;
padding-top:50px;
margin-top:50px;
margin-left:auto;
margin-right:auto;
}
#video2 {
text-align:center;
width:500px;
padding-top:50px;
margin-top:50px;
margin-left:auto;
margin-right:auto;
font-size:30px;
}
#video3 {
text-align:center;
width:500px;
padding-top:50px;
margin-top:50px;
margin-left:auto;
margin-right:auto;
font-size:30px;
text-align:center;
}
#video4 {
text-align:center;
width:500px;
padding-top:50px;
margin-top:50px;
margin-left:auto;
margin-right:auto;
font-size:30px;
text-align:center;
}
supply{
position:absolute;
width:600px;
margin-left:auto;
margin-right:auto;
}
#lesson{
width:600px;
}
#state{
position:absolute;
width:600px;
top:150px;
left:200px;
background-color:#BFB7B5;
text-align:center;
}