/* ========================================= basic ===================================== */
body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, form, fieldset, input, textarea, p, blockquote, th, td {
    margin: 0;
    padding: 0
  }
  article, aside, details, figcaption, figure, footer, header, hgroup, main, nav, section, summary {
    display: block;
  }
  audio, canvas, video {
    display: inline-block;
  }
  table {
    border-collapse: collapse;
    border-spacing: 0;
  }
  fieldset, img {
    border: 0;
  }
  address, caption, cite, code, dfn, em, strong, th, var, i {
    font-style: normal;
    font-weight: normal;
  }
  ol, ul {
    list-style: none;
  }
  h1, h2, h3, h4, h5, h6 {
    font-size: 100%;
    font-weight: normal;
  }
  q:before, q:after {
    content: '';
  }
  abbr, acronym {
    border: 0;
  }
  a {
    text-decoration: none;
  }
  
  a:hover, a:visited {
    text-decoration: none;
  }
  .f12 {
    font-size: 12px;
  }
  .f13 {
    font-size: 13px;
  }
  .f14 {
    font-size: 14px;
  }
  .f16 {
    font-size: 16px;
  }
  .f18 {
    font-size: 18px;
  }
  .f20 {
    font-size: 20px;
  }
  .fb {
    font-weight: bold;
  }
  .fn {
    font-weight: normal;
  }
  .t2 {
    text-indent: 2em;
  }
  .lh100 {
    line-height: 100%;
  }
  .lh150 {
    line-height: 150%;
  }
  .lh180 {
    line-height: 180%;
  }
  .lh200 {
    line-height: 200%;
  }
  .underline {
    text-decoration: underline;
  }
  .no-underline {
    text-decoration: none;
  }
  
  /*定位*/
  .text-left {
    text-align: left;
  }
  .text-right {
    text-align: right;
  }
  .text-center {
    text-align: center;
  }
  .hide {
    display: none;
  }
  .hidden {
    visibility: hidden;
  }
  .wrap {
    width: 980px;
  }
  .wrap, .container {
    margin-right: auto;
    margin-left: auto;
    *zoom: 1;
  }
  .wrap:before, .wrap:after, .container:before, .container:after {
    display: table;
    line-height: 0;
    content: "";
  }
  .wrap:after, .container:after {
    clear: both;
  }
  .relative {
    position: relative;
  }
  .absolute {
    position: absolute;
  }
  .float-left {
    float: left;
  }
  .float-right {
    float: right;
  }
  .float-none {
    float: none;
  }
  .clearfix {
    *zoom: 1;
  }
  .clearfix:before, .clearfix:after {
    display: table;
    line-height: 0;
    content: "";
  }
  .clearfix:after {
    clear: both;
  }
  
  /*边距*/
  .m10 {
    margin: 10px;
  }
  .m15 {
    margin: 15px;
  }
  .m30 {
    margin: 30px;
  }
  .mt5 {
    margin-top: 5px;
  }
  .mt10 {
    margin-top: 10px;
  }
  .mt15 {
    margin-top: 15px;
  }
  .mt20 {
    margin-top: 20px;
  }
  .mt25 {
    margin-top: 25px;
  }
  .mt30 {
    margin-top: 30px;
  }
  .mt35 {
    margin-top: 35px;
  }
  .mt40 {
    margin-top: 40px;
  }
  .mt50 {
    margin-top: 50px;
  }
  .mt60 {
    margin-top: 60px;
  }
  .mt70 {
    margin-top: 70px;
  }
  .mt80 {
    margin-top: 80px;
  }
  .mt100 {
    margin-top: 100px;
  }
  .mb5 {
    margin-bottom: 5px;
  }
  .mb10 {
    margin-bottom: 10px;
  }
  .mb15 {
    margin-bottom: 15px;
  }
  .mb20 {
    margin-bottom: 20px;
  }
  .mb30 {
    margin-bottom: 30px;
  }
  .mb50 {
    margin-bottom: 50px;
  }
  .mb100 {
    margin-bottom: 100px;
  }
  .ml5 {
    margin-left: 5px;
  }
  .ml10 {
    margin-left: 10px;
  }
  .ml15 {
    margin-left: 15px;
  }
  .ml20 {
    margin-left: 20px;
  }
  .ml30 {
    margin-left: 30px;
  }
  .ml40 {
    margin-left: 40px;
  }
  .ml50 {
    margin-left: 50px;
  }
  .ml100 {
    margin-left: 100px;
  }
  .mr5 {
    margin-right: 5px;
  }
  .mr10 {
    margin-right: 10px;
  }
  .mr15 {
    margin-right: 15px;
  }
  .mr20 {
    margin-right: 20px;
  }
  .mr30 {
    margin-right: 30px;
  }
  .mr50 {
    margin-right: 50px;
  }
  .mr100 {
    margin-right: 100px;
  }
  .p10 {
    padding: 10px;
  }
  .p15 {
    padding: 15px;
  }
  .p30 {
    padding: 30px;
  }
  .pt5 {
    padding-top: 5px;
  }
  .pt10 {
    padding-top: 10px;
  }
  .pt15 {
    padding-top: 15px;
  }
  .pt20 {
    padding-top: 20px;
  }
  .pt25 {
    padding-top: 25px;
  }
  .pt30 {
    padding-top: 30px;
  }
  .pt40 {
    padding-top: 40px;
  }
  .pt50 {
    padding-top: 50px;
  }
  .pb5 {
    padding-bottom: 5px;
  }
  .pb10 {
    padding-bottom: 10px;
  }
  .pb15 {
    padding-bottom: 15px;
  }
  .pb20 {
    padding-bottom: 20px;
  }
  .pb30 {
    padding-bottom: 30px;
  }
  .pb40 {
    padding-bottom: 40px;
  }
  .pb50 {
    padding-bottom: 50px;
  }
  .pb60 {
    padding-bottom: 60px;
  }
  .pb100 {
    padding-bottom: 100px;
  }
  .pl5 {
    padding-left: 5px;
  }
  .pl10 {
    padding-left: 10px;
  }
  .pl15 {
    padding-left: 15px;
  }
  .pl20 {
    padding-left: 20px;
  }
  .pl30 {
    padding-left: 30px;
  }
  .pl40 {
    padding-left: 40px;
  }
  .pl50 {
    padding-left: 50px;
  }
  .pl100 {
    padding-left: 100px;
  }
  .pr5 {
    padding-right: 5px;
  }
  .pr10 {
    padding-right: 10px;
  }
  .pr15 {
    padding-right: 15px;
  }
  .pr20 {
    padding-right: 20px;
  }
  .pr30 {
    padding-right: 30px;
  }
  .pr40 {
    padding-right: 40px;
  }
  .pr50 {
    padding-right: 50px;
  }
  .pr100 {
    padding-right: 100px;
  }