开发中，为了消除部分标签在不同浏览器中的表现差异，将下列css样式作为引入的第一个css文件。
/* CSS Document */
html, body, div, span, object, iframe,h1, h2,
h3, h4, h5, h6, p, blockquote, pre,abbr, address, cite, code,del, dfn,
em, img, ins,kbd, q, samp,small, strong, sub, sup, var,b, i,dl, dt, dd,
ol, ul, li,fieldset, form, label, legend,table, caption, tbody,
tfoot,thead,tr, th, td,article, aside, canvas, details, figcaption,
figure, footer, header, hgroup, menu, nav, section, summary,time, mark,
audio, video {
margin:0;
padding:0;
border:0;
outline:0;
font-size:100%;
vertical-align:baseline;
background:transparent;
outline-style:none;/*FF*/
}
body {
line-height:1;
}
a{
margin:0;
padding:0;
border:0;
font-size:100%;
vertical-align:baseline;
background:transparent;
}
a:hover,a:focus{
text-decoration:none;
bblr:expression(this.onFocus=this.blur());/*IE*/
outline-style:none;/*FF*/
}
table {
border-collapse:collapse;
border-spacing:0;
}
input, select {
vertical-align:middle;
}
/*css为clearfix，清除浮动*/
.clearfix::before,
.clearfix::after{
content: "";
height: 0;
line-height: 0;
display: block;
visibility: hidden;
clear: both;
}
.clearfix:after{clear:both;}
.clearfix{
*zoom:1;/*IE/7/6*/
}