body,div,h1,h2,h3,h4,h5,h6,hr,p,dl,dt,dd,ul,ol,li,form,button,input,textarea,a,i,em,b,fieldset,form,label,legend{margin:0;padding:0;}
body{font-family: "Microsoft YaHei" ,"Helvetica Neue","Helvetica","Arial","sans-serif";font-size:16px;background:#fff;-webkit-user-select: none;-webkit-tap-highlight-color:transparent;}

ol,ul{list-style:none;}
input,button,textarea,select{font-family: "Microsoft YaHei" ,"Helvetica Neue","Helvetica","Arial","sans-serif";font-size:16px;outline:none;border:none;-webkit-appearance: none;background: transparent;}
a{text-decoration:none;color: #272727;}
img{border:0;vertical-align:middle;}
h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal;}
i,em{font-style: normal;}
b{font-weight: normal;}
textarea{resize: none;}
* {-webkit-box-sizing: border-box;-moz-box-sizing: border-box;box-sizing: border-box;}
*:before,*:after{-webkit-box-sizing: border-box;-moz-box-sizing: border-box;box-sizing: border-box;}
.clearfix:after{visibility: hidden;display: block;font-size: 0;content: " ";clear: both;height: 0;}
@font-face {
  font-family: 'iconfont';  /* project id 1437248 */
  src: url('//at.alicdn.com/t/font_1437248_zum2yfrk2u.eot');
  src: url('//at.alicdn.com/t/font_1437248_zum2yfrk2u.eot?#iefix') format('embedded-opentype'),
  url('//at.alicdn.com/t/font_1437248_zum2yfrk2u.woff2') format('woff2'),
  url('//at.alicdn.com/t/font_1437248_zum2yfrk2u.woff') format('woff'),
  url('//at.alicdn.com/t/font_1437248_zum2yfrk2u.ttf') format('truetype'),
  url('//at.alicdn.com/t/font_1437248_zum2yfrk2u.svg#iconfont') format('svg');
}
.iconfont {
  font-family: "iconfont" !important;
  font-style: normal;
  -webkit-font-smoothing: antialiased;
  -webkit-text-stroke-width: 0px;
  -moz-osx-font-smoothing: grayscale;
}
.img_box>img{
  width: 100%;
}
body{ transition: all 0.3s;}
#head{
  position:fixed;
  left: 0;
  top: 0;
  width: 100%;
  z-index: 1111;
}