.v_nav { width:100%;position: fixed; bottom:-1px;  height:62px; background:#f8f8f8;  
z-index: 97;padding:0px; margin:0 auto; padding-top:12px }
.vf_nav{ width:100%; padding:0px; margin:0px;}
.vf_nav ul li{ width:20%; height:100%; float:left; text-align:center; margin:0px;}
.vf_nav ul li a{  display:block; }
.vf_nav ul li i{ display:block;  width:32px; height:32px; margin:auto; }
.vf_nav ul li span{ display:block; width:100%; height:22px; line-height:22px;color: #000000; font-size: 12px; text-align:center; margin: 0 auto;}

.vf_1{background:url(../images/vf1.png) no-repeat; background-size:100%}
.vf_2{ background:url(../images/vf2.png) no-repeat; background-size:100% }
.vf_3{ background:url(../images/vf3.png) no-repeat; background-size:100% }
.vf_4{background:url(../images/vf4.png) no-repeat; background-size:100% }
.vf_5{background:url(../images/vf5.png) no-repeat; background-size:100% }