body,header,section,footer,div,ul,li,table,.tr,td,input,textarea,h1,h2,h3,h4,h5,p,span,a,img,b,iframe{
  box-sizing: border-box;
  padding: 0;
  margin: 0;
  -webkit-tap-highlight-color:rgba(255,0,0,0);
}
html{
  font-size: 10px;
  font-family: 微软雅黑,黑体;
}
a{
  text-decoration: none;
  color:#3d3d3d;
}
li{
  list-style-type: none;
}
.cur{
  cursor: pointer;
}
.left{
  float: left;
}
.right{
  float: right;
}