Layout DIV using position attribute
Relative positioning and Absolute positioning
##Positioning tag: position Contains attributes : relative (relative) absolute (absolute)
1.position:relative; If an element is positioned relatively, first it will appear at its location. Then move the element "relative to" its original starting point by setting a vertical or horizontal position. (One more point, when positioned relatively, the element still occupies the original space regardless of whether it is moved. Therefore, moving the element will cause it to cover other boxes)
z-index. The higher the z-index value, the more visible it is. In the upper layer.)
3. After the parent container uses relative positioning and the child element uses absolute positioning, the position of the child element is no longer relative to the upper left corner of the browser, but relative to the upper left corner of the parent window4. Relative positioning and absolute positioning need to be used with top, right, The following is the relative absolute layout of multiple ps within a p:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>
<head>
<title>testp.html</title>
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3" />
<meta http-equiv="description" content="this is my page"/>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<script type="text/javascript">
window.onload = function(){
document.getElementById("myp").style.height = "200px";
}; </script>
</head>
<body>
关键因素：外层加position:relative,里面的p使用position: absolute，<br />
但这种方法的问题有：外层的p必须指定具体的height，高度不能使用百分比 <!-- <p style="position:relative;width: 600px;height:500px;">
<p style="width: 100px;height: 50px; position: absolute;right:10px;bottom: 10px"></p>
</p> -->
<p id="myp" style="position:relative;width: 100%;height:auto;">
<p style="width: 100px;height: 50px; position: absolute;right:10px;bottom: 10px"></p>
<p style="width: 100px;height: 50px; position: absolute;left:10px;bottom: 10px"></p>
</p>
</body></html>Rendering:
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