@charset "utf-8";
/* CSS Document */
*{
	margin:0;padding:0;	
}
#main{
	font-family: -webkit-body;
	width: 60%;
	margin: auto;
	padding:50px;
	border: 1px solid black;
}
.studyvatly, .studysinhhoc{
display:none;	
}
#divthem,#divsua,#divxoa{
position:absolute;
width:50%;
background:#d9edf7;
border-radius:5px;
display:none;	
}
.dapandung{
margin-left:-3%;
margin-top:-0.5%;	
}