/*清除内外边距*/
html,
body,
div,
h1,
h2,
h3,
h4,
h5,
h6,
hr,
p,
blockquote,
span,
a,
em,
/*strucural elements 结构元素*/
dl,
dt,
dd,
ul,
ol,
li,
/*list elements 列表元素*/
pre,
/*text formatting elements 文本格式元素*/
fieldset,
lengend,
button,
input,
textarea,
form,
/*form elements 表单元素*/
table,
tbody,
tfoot,
tr,
th,
td,
/*table elements 表格元素*/
img,
strong,
area,
del,
select {
    margin: 0;
    padding: 0;
}

/*设置默认字体*/
body,
button,
input,
select,
textarea {
    font-family: "微软雅黑", Arial, Verdana, "microsoft yahei";
    *line-height: 1.5;
    -ms-overflow-style: scrollbar;
    font-size: 12px;
}

h1,
h2,
h3,
h4,
h5,
h6,
pre,
code,
address,
caption,
cite,
em,
article,
aside,
dialog,
footer,
header,
section,
nav,
figure,
menu {
    display: block;
}

input:focus,
textarea:focus {
    outline: none;
}

/*边框边缘的线*/
h1,
h2,
h3,
h4,
h5,
h6 {
    font-size: 100%;
}
body *{
    box-sizing: border-box;
}
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*/

/*重置列表元素*/

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

li {
    list-style: none;
}

a {
    text-decoration: none;
    outline: medium none;
}

a:active {
    text-decoration: none;
    list-style: none;
}

sup {
    vertical-align: text-top;
}

sub {
    vertical-align: text-bottom;
}

button,
input,
select,
textarea {
    font-size: 100%;
}

/*使得表单元素在ie下能继承字体大小*/
fieldset,
img {
    border: medium none;
}

input,
select,
button {
    vertical-align: middle;
    border: none;
}

img {
    border: 0;
    display: block;
}

em,
address,
i,
cite {
    font-style: normal;
}

.hidden {
    overflow: hidden;
}

.f_l {
    float: left;
    display: inline;
}

/*左浮动*/
/*display:inline--->可修复ie6中双边间距的bug*/
.f_r {
    float: right;
    display: inline;
}

/*右浮动*/

.clear {
    clear: both;
}

/*清除浮动1*/

/*清除浮动2*/
.clearfloat {
    zoom: 1;
}

.clearfloat:after {
    display: block;
    clear: both;
    content: "";
    visibility: hidden;
    height: 0;
}