* {
    -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: #333;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}
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: block;
    clear: both;
}


/*公共类*/
.fl {
    float: left;
}
.fr {
    float: right;
}
.al {
    text-align: left;
}
.ac {
    text-align: center;
}
.ar {
    text-align: right;
}
.hide {
    display: none;
}