写html时，经常用到tab结构

html结构

CSS
[code]
.tab_hd{ border-left:1px solid #c; margin-bottom:-1px; line-height:25px; }
.tab_hd a{ float:left; width:100px; height:24px; color:#1E50A2; border-:1px solid #c; border-right:1px solid #c; text-align:center;}
.tab_hd .curr{ font-weight:bold;height:25px; background-color:#fff; position:relative;}
.tab_bd{ border:1px solid #c; padding:10px; border-bottom-left-radius:5px; border-bottom-right-radius:5px;}
.tab_cont{ display:none;}
.tab .tab_bd .curr{ display:block;}
[html]