#MyDiv{margin:10px 10px 10px 10px}/* IE6 Only */* html #MyDiv{margin:5px 5px 5px 5px}/* IE7 Only */*:first-child + html #MyDiv{margin:2px 2px 2px 2px}/*关于 clear float 的原理可参见 [How To Clear Floats Without Structural Markup]将以下代码加入Global CSS 中,给需要闭合的div加上 class="clearfix" 即可,屡试不爽.*//* Clear Fix */.clearfix:after{content:".";display:block;height:0;clear:both;visibility:hidden}.clearfix{display:inline-block}/* Hide from IE Mac */.clearfix{display:block}/* End hide from IE Mac *//* end of clearfix */body{margin:0 auto;padding:0px;width:100%;height:100%;font-size:12px;scrollbar-face-color:#e9e9e9;scrollbar-highlight-color:#ffffff;scrollbar-3dlight-color:#ffffff;scrollbar-arrow-color:#cccccc;scrollbar-track-color:#f9f9f9;scrollbar-darkshadow-color:#ffffff;background-image:url(Images/Jcpagebg.gif);min-width:1002px;/*border:0px;background:#fff url(images/gq.jpg) no-repeat scroll top center;margin-top:105px;*/}#center{ MARGIN-RIGHT:auto;MARGIN-LEFT:auto} TD{font-size:12px;color:#565656;line-height:normal}img{border-style:none}.FloatLeft{float:left}.TopLine{margin-top:5px}.FloatRight{float:right}A IMG{border:none}A:link{color:#000000;text-decoration:none}A:hover{color:#336699;text-decoration:underline}A:visited{color:#000000;text-decoration:none}A:active{color:#000000;text-decoration:underline}a.highlight:link,a.highlight:visited{color:Red;text-decoration:none}a.highlight:hover{color:Red;text-decoration:underline}input,textarea{font-size:12px;border-width:1px;border-right:#336699 1px double;border-top:#336699 1px double;border-left:#336699 1px double;color:#000000;border-bottom:#336699 1px double;height:18px;background-color:#ffffff}.buttonstyle{background-color:#FDFDFD;FILTER:progid:DXImageTransform.Microsoft.Gradient(startColorStr= '#A4D3AE' ,endColorStr= '#FFFFFF' ,gradientType=0);color:Black;border-style:none;border:1px #B7D8ED solid;cursor:hand;width:70px;height:22px}select{border-width:1px;border-right:#ffffff 1px outset;border-top:#ffffff 1px outset;border-left:#ffffff 1px outset;border-bottom:#ffffff 1px outset;background-color:#f2f2f2;width:160px;font-family:宋体}