* {
    box-sizing: border-box;
  }
  body,
  div,
  dl,
  dt,
  dd,
  ul,
  ol,
  li,
  h1,
  h2,
  h3,
  h4,
  h5,
  h6,
  pre,
  code,
  form,
  fieldset,
  legend,
  input,
  textarea,
  p,
  blockquote,
  th,
  td,
  hr,
  button,
  article,
  aside,
  details,
  figcaption,
  figure,
  footer,
  header,
  hgroup,
  menu,
  nav,
  section {
    margin: 0;
    padding: 0;
  }
  body,
  button,
  input,
  select,
  textarea {
    font-family: 'Microsoft YaHei', arial, SimSun, sans-serif, tahoma;
  }
  body {
    -webkit-text-size-adjust: none;
  }
  input,
  select,
  textarea {
    font-size: 100%;
  }
  article,
  aside,
  details,
  figcaption,
  figure,
  footer,
  header,
  hgroup,
  menu,
  nav,
  section {
    display: block;
  }
  table {
    border-collapse: collapse;
    border-spacing: 0;
  }
  fieldset,
  img {
    border: 0 none;
  }
  iframe {
    display: block;
  }
  abbr,
  acronym {
    border: none;
    font-variant: normal;
  }
  del {
    text-decoration: line-through;
  }
  address,
  caption,
  cite,
  code,
  dfn,
  em,
  th,
  var {
    font-style: normal;
    font-weight: 500;
  }
  ol,
  ul {
    list-style: none;
  }
  caption,
  th {
    text-align: left;
  }
  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
    font-size: 100%;
    font-weight: 500;
  }
  q:before,
  q:after {
    content: '';
  }
  sub,
  sup {
    font-size: 75%;
    line-height: 0;
    position: relative;
    vertical-align: baseline;
  }
  sup {
    top: -0.5em;
  }
  sub {
    bottom: -0.25em;
  }
  ins,
  a {
    text-decoration: none;
  }
  .clearfix:before,
  .clearfix:after {
    content: '';
    display: table;
  }
  .clearfix:after {
    clear: both;
    overflow: hidden;
  }
  .clearfix {
    zoom: 1;
  }
  .fl {
    float: left;
  }
  .fr {
    float: right;
  }
  .hidenone {
    display: none;
    visibility: hidden;
  }
  .hide {
    visibility: hidden;
  }
  .mt10 {
    margin-top: 10px;
  }
  .mt20 {
    margin-top: 20px;
  }
  .ml10 {
    margin-left: 10px;
  }
  .mr10 {
    margin-right: 10px;
  }
  .pt10 {
    padding-top: 10px;
  }
  .pl10 {
    padding-left: 10px;
  }
  .pr10 {
    padding-right: 10px;
  }
  .tc {
    text-align: center;
  }
  
  .wd-1200 {
    width: 1200px;
  }
  .wd-1200::after {
    clear: both;
    display: table;
    content: '';
  }
  
  
  .w1200{
    width: 1200px;
    margin: 0 auto;
  }