html 7 圣诞树 浮动 相对位置
<!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" xml:lang="en"> <head> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> <title>Document</title> <style type="text/css"> div{ margin:0 auto; } #triangle-up{ width:0; height:0; border-left:80px solid transparent; border-right:80px solid transparent; border-bottom:70px solid green; float:right; position:relative; right:44.5%; } #triangle-up-bigger{ width:0; height:0; border-left:140px solid transparent; border-right:140px solid transparent; border-bottom:80px solid green; padding-top:55px; } #treeRoot{ width:30px; height:100px; background: brown; } </style> </head> <body> <div id="triangle-up"> </div> <div id="triangle-up-bigger"></div> <div id="treeRoot"></div> </body> </html>