/* CSS Reset*/
body, h1, h2, h3, h4, h5, h6, hr, p, blockquote, dl, dt, dd, ul, ol, li, pre, form, fieldset, legend, button, input, textarea, th, td {
    margin: 0;
    padding: 0;
}
body, button, input, select, textarea { font: 14px/24px Microsoft Yahei,\5b8b\4f53, tahoma, arial, sans-serif;}
h1, h2, h3, h4, h5, h6 { font-size: 14px; font-weight:normal; }
address, cite, dfn, em, var { font-style: normal; } 
code, kbd, pre, samp { font-family: courier new, courier, monospace; } 
small { font-size: 12px; }
ul, ol { list-style: none; }
a { text-decoration: none; }
a:hover { text-decoration: underline; }
sup { vertical-align: text-top; } 
sub { vertical-align: text-bottom; }
legend { color: #000; } 
fieldset, img { border: 0; }
button, input, select, textarea { font-size: 100%; } 

article, aside, details, figcaption, figure, footer,header, hgroup, menu, nav, section,
summary, time, mark, audio, video {display: block;margin: 0;padding: 0;}
mark { background: #ff0; }
.clear{clear:both;}
img{ vertical-align:middle;}

/*grids CSS*/
#header, #content, #footer {margin-left: auto;margin-right: auto;}

/** 布局基础样式 **/
.col-main {float: left;width: 100%;
    /* bug fix: 主栏没有内容时，在 Firefox 和 Chrome 等浏览器下，布局不对 */
    min-height: 1px;
}
.col-sub, .col-extra {
    float: left;
    /*position: relative;  按需设置，仅在需要时添加 */
}

/** 清除浮动 **/
.clear, .layout:after, .main-wrap:after, .col-sub:after, .col-extra:after {
	content: '\20';
	display: block;
	height: 0;
	clear: both;
}
.clear, .layout, .main-wrap, .col-sub, .col-extra {
    *zoom: 1;
}