body{background:#09c;}
#div1{height:400px;width:450px; position:relative; margin:10px auto;}
#div1 a{position:absolute;top:0px;left:0px;color:#fff;font-weight:bold;padding:3px 6px;}
#div1 a:hover{border:1px solid #eee;background:#000;border-radius:5px;}