.pc-tab section>div,.pc-tab>input{display:none}#tab1:checked~section .tab1,#tab2:checked~section .tab2,#tab3:checked~section .tab3{display:block}#tab1:checked~nav .tab1,#tab2:checked~nav .tab2,#tab3:checked~nav .tab3{color:red}.pc-tab{width:100%;margin:0 auto}.pc-tab ul{list-style:none;margin:0;padding:0}.pc-tab ul li label{float:left;padding:15px 25px;border:1px solid #ddd;border-bottom:0;background:#eee;color:#444}.pc-tab ul li label:hover{background:#ddd}.pc-tab ul li label:active{background:#fff}.pc-tab ul li:not(:last-child) label{border-right-width:0}.pc-tab section{clear:both}.pc-tab section .div1{padding:20px;width:100%;border:1px solid #ddd;background:#fff;line-height:1.5em;color:#444}.pc-tab section .div1 h2{margin:0;color:#34495e}#tab1:checked~nav .tab1 label,#tab2:checked~nav .tab2 label,#tab3:checked~nav .tab3 label{background:#fff;color:#72a6af;position:relative;font-weight:500}#tab1:checked~nav .tab1 label:after,#tab2:checked~nav .tab2 label:after,#tab3:checked~nav .tab3 label:after{content:"";display:block;position:absolute;height:2px;width:100%;background:#fff;left:0;bottom:-1px}footer{margin-top:50px;font-size:14px;color:#ccc;text-align:center}footer a{color:#aaa;text-decoration:none}