* {
  -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;
}

body,
div,
dl,
dt,
dd,
ul,
ol,
li,
h1,
h2,
h3,
h4,
h5,
h6,
pre,
code,
form,
fieldset,
legend,
input,
button,
textarea,
p,
blockquote,
th,
td {
  margin: 0;
  padding: 0;
}

body {
  background: #fff;
  color: #555;
  font-size: 14px;
  font-family: "Arial", "Microsoft YaHei", "黑体", "宋体", sans-serif;
}

td,
th,
caption {
  font-size: 14px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: normal;
  font-size: 100%;
}

address,
caption,
cite,
code,
dfn,
em,
strong,
th,
var {
  font-style: normal;
  font-weight: normal;
}

a {
  color: #555;
  text-decoration: none;
}

a:link, a:visited,a:hover ,a:active{
  text-decoration: none;

}

img {
  border: none;
  vertical-align: middle;
}

ol,
ul,
li {
  list-style: none;
}

input,
textarea,
select,
button {
  font: 14px "Arial", "Microsoft YaHei", "黑体", "宋体", sans-serif;
}

table {
  border-collapse: collapse;
}

html {
  overflow-y: scroll;
}

.clearfix:before,
.clearfix:after {
  content: " ";
  display: inline-block;
  height: 0;
  clear: both;
  visibility: hidden;
}

.clearfix {
  *zoom: 1;
}

/*公共类*/

.fl {
  float: left
}

.fr {
  float: right
}

.al {
  text-align: left
}

.ac {
  text-align: center
}

.ar {
  text-align: right
}

.hide {
  display: none
}