/*剔除多余标签，增加渲染效率*/
html, body,  span, iframe, h1, h2, h3, p, a, 
img, small, strong, dl, dt, dd, ol, ul, li, 
form, label, table, tr, th, td { 
    margin: 0;            
    padding: 0; 
    border: 0; 
    outline: 0; 
} 
/*解决横屏竖屏文字大小问题*/
html {
  font-family: "Microsoft YaHei";      
  -ms-text-size-adjust: 100%; 
  -webkit-text-size-adjust: 100%; 
}
 /*兼容ie9以下的显示*/
audio,
canvas,
progress,   
video {
  display: inline-block;
}

/**
 * 在苹果4-7中正确显示
 */

audio:not([controls]) {
  display: none;
  height: 0;
}
/**
 * 去除在ie10中 active下灰色背景
 * 去除在ios中的间隙
 */
a {
  background-color: transparent; 
  -webkit-text-decoration-skip: objects; 
}
:focus { 
    outline: 0; 
} 
table { 
    border-collapse: separate; 
    border-spacing: 0; 
} 
caption, th, td { 
    text-align: left; 
    font-weight: normal; 
} 
a img, iframe { 
    border: none; 
} 
a{
  text-decoration: none;
}
a:visited,
a:hover {
 text-decoration: none;
}
ol, ul { 
    list-style: none; 
} 
input, textarea, select, button { 
    font-size: 100%; 
    font-family: inherit; 
    margin：0；
} 
button,input { 
  overflow: visible;
}
/* 禁止在火狐ie下的字体改变 */
button,select { 
  text-transform: none;
}
select { 
    margin: inherit; 
} 
/* Fixes incorrect placement of numbers in ol’s in IE6/7 */ 
ol { margin-left:2em; } 
/* == clearfix == */ 
.clearfix:after { 
    content: " "; 
    display: block; 
    height: 0; 
    clear: both; 
    visibility: hidden; 
} 
.clearfix {display: inline-block;} 
* html .clearfix {height: 1%;} 
.clearfix {display: block;}