/** 清除内外边距 **/
body,
h1,
h2,
h3,
h4,
h5,
h6,
hr,
p,
blockquote,
dl,
dt,
dd,
ul,
li,
pre,
form,
fieldset,
legend,
button,
input,
textarea,
th,
td {
  margin: 0;
  padding: 0;
}
/** 设置默认字体 **/
body,
button,
input,
select,
textarea {
  font: 12px/1.5 tahoma, arial, 'Heiti SC', '微软雅黑', sans-serif;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  font-size: 100%;
}
address,
cite,
dfn,
em,
var {
  font-style: normal;
}
/* 将斜体扶正 */
code,
kbd,
pre,
samp {
  font-family: courier new, courier, monospace;
}
/* 统一等宽字体 */
small {
  font-size: 12px;
}
/* 小于 12px 的中文很难阅读，让 small 正常化 */
/** 重置列表元素 **/
ul,
ol {
  list-style: none;
}
/** 重置文本格式元素 **/
a {
  text-decoration: none;
  color: #000;
}
a:hover {
  text-decoration: underline;
}
sup {
  vertical-align: text-top;
}
/* 重置，减少对行高的影响 */
sub {
  vertical-align: text-bottom;
}
/** 重置表单元素 **/
legend {
  color: #000;
}
/* for ie6 */
fieldset,
img {
  border: 0;
}
/* img 搭车：让链接里的 img 无边框 */
img {
  vertical-align: bottom;
}
button,
input,
select,
textarea {
  font-size: 100%;
}
/* 使得表单元素在 ie 下能继承字体大小 */
/* 注：optgroup 无法扶正 */
/** 重置表格元素 **/
table {
  border-collapse: collapse;
  border-spacing: 0;
}
/* 重置 HTML5 元素 */
article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section,
summary,
time,
mark,
audio,
video {
  display: block;
  margin: 0;
  padding: 0;
}
mark {
  background: #ff0;
}
.clearfix:after {
  content: ".";
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
}
.clearfix {
  display: inline-block;
}
/* Hides from IE-mac */
* html .clearfix {
  height: 1%;
}
.clearfix {
  display: block;
}
/* End hide from IE-mac */
body {
  font: 12px/1.5 tahoma, arial, 'Heiti SC', 'Microsoft Yahei', sans-serif;
  position: relative;
}