body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,form,input,button,textarea,p,th,td,span,a,b,strong{margin:0; padding:0; box-sizing: border-box;}
body {font-size: 16px; line-height: 1.5; color: #000; background: #fff; }
img{border:0;}
input{border: none;}
a{ text-decoration: none;background: none ;color: #000;}
ul,li, ol { list-style: none; }
:focus{ outline:none;}
.clearfloat:after{display:block;clear:both;content:"";visibility:hidden;height:0}
.clearfix{ clear: both; content: ""; display: block; overflow: hidden }
.clear{clear: both;}
.fl{ float: left; }
.fr{float: right;}
.w1200{width:1200px;margin:0 auto}