#wrap{width:970px; margin:0 auto;}
#mainbody{position:relative; margin-top:15px;}
#left{float:left; width:110px; }
#mid{ float:left; margin-left:13px; width:650px;border:1px solid #999;}
#right{position:absolute; top:0;right:0; margin-left:15px; width:180px; border:1px solid #999;}
#mainbody{position:relative; margin-top:15px;}
#left{float:left; width:110px; }
#mid{ float:left; margin-left:13px; width:650px;border:1px solid #999;}
#right{position:absolute; top:0;right:0; margin-left:15px; width:180px; border:1px solid #999;}
2015-10-19
*{margin:0; padding:0;}
#wrap{width:970px; margin:0 auto;}
#mainbody{position:relative; margin-top:15px;}
#left{float:left;width:110px; }
#mid{margin-left:123px;width:650px;border:1px solid #999;}
#right{margin-left:790px;top:0;position:absolute;border:1px solid #999;}
#wrap{width:970px; margin:0 auto;}
#mainbody{position:relative; margin-top:15px;}
#left{float:left;width:110px; }
#mid{margin-left:123px;width:650px;border:1px solid #999;}
#right{margin-left:790px;top:0;position:absolute;border:1px solid #999;}
2015-10-18
#wrap{width:970px; margin:0 auto;}
#mainbody{position:relative; margin-top:15px;}
#left{【任务2】width:110px;float:left; }
#mid{【任务2】width:650px;border:1px solid #999; float:left; margin-left:13px;}
#right{【任务3】border:1px solid #999; top:0; position:absolute; margin-left:790px;}
#mainbody{position:relative; margin-top:15px;}
#left{【任务2】width:110px;float:left; }
#mid{【任务2】width:650px;border:1px solid #999; float:left; margin-left:13px;}
#right{【任务3】border:1px solid #999; top:0; position:absolute; margin-left:790px;}
2015-10-18
#wrap{width:970px; margin:0 auto;}
#mainbody{position:relative; margin-top:15px;}
#left{width:110px; position:absolute; top:0; left:0;}
#mid{position:absolute;top:0px;margin-left:170px;width:650px;border:1px solid #999;}
#right{ position:absolute; right:0; top:0;border:1px solid #999;width:110px;}
#mainbody{position:relative; margin-top:15px;}
#left{width:110px; position:absolute; top:0; left:0;}
#mid{position:absolute;top:0px;margin-left:170px;width:650px;border:1px solid #999;}
#right{ position:absolute; right:0; top:0;border:1px solid #999;width:110px;}
2015-10-17
static静态定位 relative相对定位 absolute绝对定位 fixed 固定定位,其中absolute和fixed 属于绝对定位
2015-10-17
#wrap{width:970px; margin:0 auto;}
#mainbody{position:relative; margin-top:15px;}
#left{ float:left; width:110px; }
#mid{float:left; margin-left:13px;width:650px;border:1px solid #999;}
#right{position:absolute; left:790px; border:1px solid #999;}
#mainbody{position:relative; margin-top:15px;}
#left{ float:left; width:110px; }
#mid{float:left; margin-left:13px;width:650px;border:1px solid #999;}
#right{position:absolute; left:790px; border:1px solid #999;}
2015-10-17