css6种常见选择器: 1.id选择器:用#号 2.class选择器:用. 3.标签选择器:div{}, img{}, p{}, 4.通配选择器:*{} 通配页面上所有元素(效率低,用的较少) 5.伪类选择器: 6.群选择器:#header .img {}
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>公司首页</title> <style type="text/css"> *{ margin: 0px; padding: 0px; border: 0px; } #container{ width: 1024px; margin: 0 auto; } /******头部*****/ #header { height: 128px; background-color: green; } /*******导航********/ #banner { height: 237px; background-color: pink; margin:10px 0; } /********主体********/ #main { height: 464px; } #mleft { width: 700px; height: 464px; background-color: #f00000; float:left; } .yewu{ width: 337px; height: 222px; margin: 5px; background-color: orange; float: left; } /* #m4{ 对于float 的元素,外边距不存在 重叠效果,即:上下边距为两者的margin只和 width: 337px; height: 222px; margin: 5px; background-color: orange; float: left; }*/ #mright { width: 315px; height: 464px; background-color: #0000ff; float: right; } #view{ width: 294px; height: 227px; margin-bottom: 10px; background-color: purple; } #contact{ width: 294px; height: 227px; margin-bottom: 10px; background-color: #ccc; } /*******尾部*********/ #footer { height: 53px; background-color: yellow; margin-top: 10px; } </style> </head> <body> <!--头部开始--> <div id="container"> <div id="header"></div> <div id="banner"></div> <div id="main"> <div id="mleft"> <div class="yewu"></div> <div class="yewu"></div> <div class="yewu"></div> <div class="yewu"></div> </div> <div id="mright"> <div id="view"></div> <div id="contact"></div> </div> </div> <div id="footer"></div> </div> </body> </html>
时间: 2024-10-06 18:51:14