摘要：*{margin: 0px; padding: 0px;border: none;} li{list-style: none;} a{text-decoration:none;} .clear{clear:both;} /*头部*/ .header{width: 100%;height: 40px;background:&nbs
*{margin: 0px; padding: 0px;border: none;}
li{list-style: none;}
a{text-decoration:none;}
.clear{clear:both;}
/*头部*/
.header{width: 100%;height: 40px;background: #333;}
.menu{background: #ccc; margin: 0px auto; height: 40px; width: 1226px;}
/*主体*/
.content{margin: 0px auto; width: 1226px;}
.contentMenu{background: #ccc; margin: 10px auto; height: 90px; }
/* 竖导航与焦点图 */
.contentPic{margin: 10px auto;}
.contentPic_left{background:#888;width:246px;height:480px;float:left;}
.contentPic_right{background:#eee;width:980px;height:480px;float:left;}
/* 手机广告四张图 */
.contentPic_ul{ margin: 10px auto;}
.contentPic_ul_l{background: #ccc;width:235px;height:170px;float:left;margin-right:13px;}
.contentPic_ul_r{width:317px;height:170px;float:left;}
/* 小米闪购*/
.contentShop{ margin: 10px auto; height: 340px; }
/* 五栏DIV样式 */
.contentShop_ul{background: #ccc;width:235px;height:340px;float:left;}
.contentImg{background:#ccc;margin:10px auto;height:120px}
.contentUl{background: #ccc; margin: 10px auto; height: 80px;font-size:20px; }
/* 手机专栏*/
.contentPhone{margin: 10px auto;}
.contentPhone_left{width:234px;height:614px;background:url(../img/buy/手机AD.jpg);margin-right:12px;float:left;}
.contentPhone_right{width:980px;height:614px;float:left;}
.contentPhone_right_ul{width:235px;height:300px;background:#888;float:left;}/*235宽度布局 可以用于十图片布局* /
/* 十图片布局中右下角分栏上下两部分 */
.contentPhone_right_ul_top,.contentPhone_right_ul_bottom{width:235px;height:145px;background:#888;}
.contentPhone_right_ul_bottom{margin-top:10px;}
/* 底部*/
.footer{height: 100px; width: 1226px;margin: 0px auto; }
.footer_top_li_1{width:1226px;height:80px;line-height:80px; text-align: center;}
.footer_top_li_1 a{font-size:16px;font-weight: 300;color:#616161;}
.footer_top_li_1 a i{font-size:16px;margin-right:10px;}
.footer_top_li_1 span{color:#616161;border-left:1px solid #e0e0e0;font-size:20px;margin:0px 56px;}/* 设置一条小竖线 */
.footer_top_li_1 a:hover{color:#ff6700;}
.line{border-top:1px solid #e1e1e1;}/* 设置一条线分隔 */
.footer_top_li_2{width:1226px;height:100px;margin:40px 0px;}
.footer_top_li_a dl{float:left;width:160px;display: block;}/* 可以不用block */
.footer_top_li_a dt{font-size:14px;line-height:14px;color:#424242;margin-bottom: 26px;}
.footer_top_li_a dd{font-size:12px;line-height:14px;color:#424242;margin-top:10px;}
.footer_top_li_a dd a{color:#757575}
.footer_top_li_a dd a:hover{color:#ff6700}
.footer_top_li_a .connect{border-left:1px solid #ccc; height:112px; width:258px; float:right;text-align:center;}/* 设置联系区域 */
.footer_top_li_a .connect .telephone{color:#ff6700;height:22px;line-height:22px;font-size:22px;}/* 设置电话号 */
.footer_top_li_a .connect .time{color:#757575;line-height:22px;font-size:14px;}/* 设置工作时间 */
.footer_top_li_a .connect button{margin-top:5px;color:#ff6700;line-height:24px;width:120px;font-size:14px;background:#fff;border:1px solid #ff6700;}/* 设置button样式 */
.footer_top_li_a .connect button:hover{background:#ff6700;color:#fff;}/* 设置button样式 */
/* 设置footer部分中bottom第一列图片 */
.footer_bottom_li{height: 100px; width: 1226px; margin: 5px auto; }
.footer_bottom_li_1,.footer_bottom_li_2,.footer_bottom_li_3{float:left;margin-right:10px;}
.footer_bottom_li_1,.footer_bottom_li_2{margin-right:10px;}
/* 设置li-2里面第一个div */
.footer_botom_li_ul{height:20px;width:640px;}
.footer_bottom_li_ul li{float:left;font-size:12px;color:#757575;height:18px;line-height:18px;}
.footer_bottom_li_ul li:hover{color:#ff6700;}
.footer_bottom_li_ul li span{border-left:1px solid #b0b0b0;margin:5px 5px;}
/* 设置li-2里面第二个div */
.footer_bottom_li_link {width:640px;color:#b0b0b0;font-size:12px;}
.footer_bottom_li_link a{color:#b0b0b0;font-size:12px;}
.footer_bottom_li_link a:hover{color:#ff6700;}
/* 设置bottom_li第四个div */
.footer_bottom_li_4{font-size:24px;font-family: "楷体";text-align:center;line-height:24px;clear:left;width:1226px;margin:10px 0;}
/* 设置bottom_li第三个div中的图片 */
.footer-bottom_li_3 img{display:block;width:83px;float: left;margin-right: 10px;}<!DOCTYPE html> <html> <head> <meta charset="UTF-8" /> <title>小米商城跟随版</title> <link rel="shortout icon" type="image/x-icon" href="static/img/footlogo.png" /> <link rel="stylesheet" type="text/css" href="static/font-awesome/css/font-awesome.min.css" /> <link rel="stylesheet" type="text/css" href="static/css/style.css" /> </head> <body> <!-- 头部 --> <div class="header"> <div class="menu"> 网站头部 </div> </div> <div class="clear"></div> <!-- 主体 --> <div class="contents"> <div class="content"> <div class="contentMenu"></div> <div class="contentPic"><!-- 设置类别导航区域和焦点图 --> <div class="contentPic_left"></div><!-- 左侧为竖导航 --> <div class="contentPic_right"></div><!-- 右侧为焦点图区域 --> </div> <div class="clear"></div><!-- 清除浮动 --> <div class="contentPic_ul"><!-- 设置四张图片 --> <div class="contentPic_ul_l"></div><!-- 设置左一 --> <div class="contentPic_ul_r" style="background:url(static/img/midAD1.jpg);margin-right:12px;"></div><!-- 设置右一 --> <div class="contentPic_ul_r" style="background:url(static/img/midAD2.jpg);margin-right:12px;"></div><!-- 设置右二 --> <div class="contentPic_ul_r" style="background:url(static/img/midAD3.jpg)"></div><!-- 设置右三 --> </div> <div class="clear"></div><!-- 清除浮动 --> <div class="contentShop"> <h1>小米闪购</h1><!-- 小米闪购标题区 --> <div class="contentShop_ul" style="margin-right:12px;border-top:1px solid red;"></div><!-- 五栏DIV --> <div class="contentShop_ul" style="margin-right:12px;border-top:1px solid #FF6700;"></div><!-- 五栏DIV --> <div class="contentShop_ul" style="margin-right:12px;border-top:1px solid #008000;"></div><!-- 五栏DIV --> <div class="contentShop_ul" style="margin-right:12px;border-top:1px solid blue"></div><!-- 五栏DIV --> <div class="contentShop_ul" style="border-top:1px solid red;"></div><!-- 五栏DIV --> </div> <div class="clear"></div><!-- 清除浮动 --> <div class="contentImg" style="background:url(static/img/longAD1.jpg);"></div> <div class="contentUl">手机</div> <div class="contentPhone"> <div class="contentPhone_left"></div><!-- 左侧竖长图片 --> <div class="contentPhone_right"><!-- 右侧八长图片布局 --> <div class="contentPhone_right_ul" style="margin-right:12.7px;"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;"></div> <div class="contentPhone_right_ul"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;margin-top:14px;"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;margin-top:14px;"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;margin-top:14px;"></div> <div class="contentPhone_right_ul" style="margin-top:14px;"></div> </div> </div> <div class="clear"></div> <div class="contentImg" style="background:url(static/img/longAD2.jpg);"></div> <div class="contentUl">智能</div> <div class="contentPhone"> <!-- 智能十图片布局 --> <div class="contentPhone_right_ul" style="margin-right:12.7px;background:url(static/img/buy/智能AD1.jpg)"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;"></div> <div class="contentPhone_right_ul"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;margin-top:14px;background:url(static/img/buy/智能AD2.jpg)"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;margin-top:14px;"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;margin-top:14px;"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;margin-top:14px;"></div> <div class="contentPhone_right_ul" style="margin-top:14px;background:#fff;"><!-- 右下角分上下两栏 --> <div class="contentPhone_right_ul_top"></div> <div class="contentPhone_right_ul_bottom"></div> </div> </div> <div class="clear"></div> <div class="contentImg" style="background:url(static/img/longAD3.jpg);"></div> <div class="contentUl">家电</div> <div class="contentPhone"> <!-- 家电十图片布局 --> <div class="contentPhone_right_ul" style="margin-right:12.7px;background:url(static/img/buy/家电AD1.jpg)"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;"></div> <div class="contentPhone_right_ul"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;margin-top:14px;background:url(static/img/buy/家电AD2.jpg)"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;margin-top:14px;"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;margin-top:14px;"></div> <div class="contentPhone_right_ul" style="margin-right:12.7px;margin-top:14px;"></div> <div class="contentPhone_right_ul" style="margin-top:14px;background:#fff;"><!-- 右下角分上下两栏 --> <div class="contentPhone_right_ul_top"></div> <div class="contentPhone_right_ul_bottom"></div> </div> </div> <div class="clear"></div> <div class="contentImg" style="background:url(static/img/longAD4.jpg);"></div> </div> </div> <!-- 底部 --> <div class="footers"> <div class="footer"> <div class="footer_top_li_1"> <a href="#"><i class="fa fa-wrench"></i>预约维修服务</a><span></span> <a href="#"><i class="fa fa-rotate-right "></i>7天无理由退货</a><span></span> <a href="#"><i class="fa fa-refresh"></i>15天免费换货</a><span></span> <a href="#"><i class="fa fa-gift"></i>满150元包邮</a><span></span> <a href="#"><i class="fa fa-map-marker"></i>520余家售后网点</a> </div> <div class="line"></div> <div class="footer_top_li_2"> <div class="footer_top_li_a"> <dl> <dt>帮助中心</dt> <dd><a href="">账户管理</a></dd> <dd><a href="">购物指南</a></dd> <dd><a href="">订单操作</a></dd> </dl> <dl> <dt>服务支持</dt> <dd><a href="">售后政策</a></dd> <dd><a href="">自助服务</a></dd> <dd><a href="">相关下载</a></dd> </dl> <dl> <dt>线下门店</dt> <dd><a href="">授权体验</a></dd> <dd><a href="">小米之家</a></dd> <dd><a href="">服务网点</a></dd> </dl> <dl> <dt>关于小米</dt> <dd><a href="">了解小米</a></dd> <dd><a href="">加入小米</a></dd> <dd><a href="">投资关系</a></dd> </dl> <dl> <dt>关注我们</dt> <dd><a href="">新浪微博</a></dd> <dd><a href="">官网微博</a></dd> <dd><a href="">联系我们</a></dd> </dl> <dl> <dt>特色服务</dt> <dd><a href="">F码通道</a></dd> <dd><a href="">礼物码</a></dd> <dd><a href="">防伪查询</a></dd> </dl> <div class="connect"> <p class="telephone">Feir-520-1314</p> <p class="time">周一至周日 8:00-18:00<br>(仅收市话费)</p> <button><span class="fa fa-commenting "></span> 联系客服</button> </div> </div> </div> </div> <div class=clear></div> <div class="footer_bottom_li"> <div class="footer_bottom_li_1"> <img src="static/img/footlogo.png" alt="" /> </div> <div class="footer_bottom_li_2"> <div class="footer_bottom_li_ul"> <ul> <li>小米商城<span></span></li> <li>小米UI<span></span></li> <li>小米米聊<span></span></li> <li>小米米家<span></span></li> <li>小米手机<span></span></li> <li>小米路由<span></span></li> <li>小米路由<span></span></li> <li>小米路由<span></span></li> <li>小米路由<span></span></li> </ul> </div> <div class="footer_bottom_li_link" style="clear:left"> <a href="">©mi.com</a> 京ICP证110507号 <a href="">京ICP备10046444号</a> <a href="">京公网安备11010802020134号</a> <a href="">京网文[2014]0059-0009号</a> <br> 违法和不良信息举报电话：185-0000-000，本网站所列数据，除特殊说明，所有数据均出自我司实验室测试 </div> </div> <div class="footer_bottom_li_3" style="margin-left:58px;"> <img src="static/img/footericon1.png" alt="" style="width:83px;" class="icon"> <img src="static/img/footericon2.png" alt="" class="icon"> <img src="static/img/footericon3.png" alt="" class="icon"> <img src="static/img/footericon4.png" alt="" class="icon"> <img src="static/img/footericon5.png" alt="" class="icon"> </div> <div class="footer_bottom_li_4">探索黑科技，小米为发烧而生！</div> </div> </div> </body> </html>
老师您好，我在写底部
<div class="footer_bottom_li_link" style="clear:left"> <a href="">©mi.com</a>
这里的时候不加这个清除浮动，他不下来，跟在footer_bottom_li_ul的后面，没有找出毛病，加了个clear。
批改老师：天蓬老师批改时间：2018-11-30 16:13:15
老师总结：看起来好费劲, 下次将css代码格式化一下,再发布吧,并且给关键部分, 加上注释,好吗?
