#div1 {position:relative; width:450px; height:450px; margin: 20px auto 0; }
#div1 a {position:absolute; top:0px; left:0px; font-family: Microsoft YaHei; color:#7b2807; font-weight:bold; text-decoration:none; padding: 3px 6px; }
#div1 a:hover {border: 1px solid #af0f0c; background:#f5b755; }
#div1 .blue {color:#ff5900;}
#div1 .red {color:#CC0000;}
#div1 .yellow {color:#7b2807;}