同级、父子级div定位

以两个div右上角对齐为例：

效果图：

1.同级定位

<!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>同级</title>

        <style type="text/css">

            body {

                margin: 0;

                padding: 0;

            }

            .main {

                position: relative;

                width:1000px;

                height:600px;

                background: gray;

            }

            .div_01 {

                position: absolute;

                top: 0;

                right: 0;

                width: 600px;

                height: 400px;

                z-index: 1;

                background: yellow;

            }

            .div_02 {

                position: absolute;

                top: 0;

                right: 0;

                width: 200px;

                height: 100px;

                z-index: 2;

                background: green;

                }

        </style>

    </head>

    <body>

        <div class="main">

            <div class="div_01">

                div_01

            </div>

            <div class="div_02">

                div_02

            </div>

        </div>

    </body>

</html>

2.父子级定位

<!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>嵌套</title>

        <style type="text/css">

            body {

                margin: 0;

                padding: 0;

            }

            .div_01 {

                position: relative;

                width:600px;

                height:400px;

                background: yellow;

            }

            .div_02 {

                position:absolute;

                top: 0;

                right: 0;

                width:200px;

                height:100px;

                background: green;

                }

        </style>

    </head>

    <body>

        <div class="div_01">

            <div class="div_02">

                div_02

            </div>

        </div>

    </body>

</html>

巴特西

同级、父子级div定位

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