css reset重置样式有那么重要吗？_html/css_WEB-ITnose

@charset "utf-8";html, body, div, span, applet, object, iframe,h1, h2, h3, h4, h5, h6, p, blockquote, pre,a, abbr, acronym, address, big, cite, code,del, dfn, em, font, img, ins, kbd, q, s, samp,small, strike, strong, sub, sup, tt, var,b, u, i, center,dl, dt, dd, ol, ul, li,fieldset, form, label, legend,table, caption, tbody, tfoot, thead, tr, th, td {    margin: 0;    padding: 0;    border: 0;    outline: 0;    font-size: 100%;    /*background: transparent;*/}table {    border-collapse:collapse;    border-spacing:0;}fieldset, img {    border:0;}address, caption, cite, code, dfn, em, strong, th, var {    font-style:normal;    font-weight:normal;}ol, ul { list-style:none; }caption, th { text-align:left; }h1, h2, h3, h4, h5, h6 {    font-size:200%;    font-weight:normal;}:focus { outline: 0;}a{ text-decoration:none;}a:hover img{ border:none;}a:active{noOutline:expression(this.onFocus=this.blur());}/*清除浮动*/.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 *//*png css hack for ie6*/*html img.png{    _background-image: expression(this.runtimeStyle.backgroundImage = "none",this.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.src + "', sizingMethod='image')",this.src = "http://i0.itc.cn/20101019/848_0a785a7b_1118_4825_85dc_e8696988c94b_0.gif");}

*{ margin:0; padding:0; }

body, dl, dd, h1, h2, h3, h4, h5, h6, p, form{margin:0;}  ol,ul{margin:0; padding:0;}