<<style type="text/css">
*{margin:0; padding:0; font-size:12px; color:#346667; font-family:Arial, Helvetica, sans-serif,"宋体";}
a{text-decoration:none;}
a:hover{text-decoration:underline;}

h2{line-height:30px; font-size:14px; margin-bottom:5px;}
p{line-height:24px; text-indent:26px; margin-bottom:5px;}

#wrap{width:770px; margin:0 auto;}

#header{width:762px; border:4px solid #badbdb; background:url(../images/banner.gif) no-repeat; height:92px; text-align:right; color:#fff;}
#header a{color:#fff; margin:0 5px;}

#mainbody,#footer{width:100%;}
#footer{text-align:center; padding:20px 0;}

.content{background:#eff9f9;
         padding:44px 15px 15px;
【任务1】？
         border:4px solid #badbdb;}
.profile{background:url(../images/t_profile.gif) no-repeat #eff9f9;}
.book{background:url(../images/t_book.gif) no-repeat #eff9f9;}
.book img{
          border:1px solid #b1adaa;【任务2？
【任务3？ margin:10px 18px;}
</style>