body {
  font-size: 12px;
  background-color: #fff;
}
/*pc端常设置字体大小及间距*/
h1 {
  font-size: 18px;
  /* 18px / 12px = 1.5 */
}
h2 {
  font-size: 16px;
}
h3 {
  font-size: 14px;
}
h4,
h5,
h6 {
  font-size: 100%;
}
address,
cite,
dfn,
em,
var {
  font-style: normal;
}
/* 将斜体扶正 */
code,
kbd,
pre,
samp,
tt {
  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 */
body,
h1,
h2,
h3,
h4,
h5,
h6,
hr,
p,
blockquote,
dl,
dt,
dd,
ul,
ol,
li,
pre,
fieldset,
lengend,
button,
input,
textarea,
th,
td {
  margin: 0;
  padding: 0;
}
input,
button,
select,
img {
  margin: 0;
  line-height: normal;
}
select {
  padding: 1px;
}
ul,
ol {
  list-style: none;
}
select,
input,
button,
button img,
label {
  vertical-align: middle;
}
header,
footer,
section,
aside,
nav,
hgroup,
figure,
figcaption {
  display: block;
  margin: 0;
  padding: 0;
  border: none;
}
/*HTML5标签变块级*/
a {
  text-decoration: none;
  color: #666;
}
a:hover {
  color: #db251c;
}
/*重置链接下划线*/
img {
  border: none;
}
/* 浮动及边常用边距  */
.fL {
  float: left;
}
.fR {
  float: right;
}
.mL10 {
  margin-left: 10px;
}
.mB10 {
  margin-bottom: 10px;
}
/*清除浮动*/
.clear {
  clear: both;
}
.clearfix:after {
  content: ".";
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
}
.clearfix {
  display: inline-block;
}
* html .clearfix {
  height: 1%;
}
/* Hides from IE-mac \*/
.clearfix {
  display: block;
}
/* End hide from IE-mac */
.txt-hid {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.side_green .show_btn {
  font-size: 0;
}