how to position a div in the center and hide it?
Question
i want to make a login page but it is hidden in the center of the main page.
and then i use jquery to make the div that surrounds it visible and it will be like the login page at www.bytes.com.
but i cant figure it out how to center it with css. it doesnt work without affecting the main pages div positions.
i just want it to float over the main page. someone?
2 answers
solution1
3 2009-12-03 22:27:05
Is this what you want? Note the CSS comment. It's important to get the div centered. The "trick" that make the float above the other parts of your site, is position: absolute .
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>Centering a DIV with CSS</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js">
</script>
<style type="text/css">
.center_center {
position: absolute;
background-color: #ccc;
border: 1px solid #000;
width: 300px;
height: 200px;
/* notice: margins are -(value/2) */
margin-left: -150px;
margin-top: -100px;
top: 50%;
left: 50%;
display: none;
}
</style>
</head>
<body>
<div id='login' class="center_center">
Login content
</div>
<p><input type="button" value="Login" onclick="$('#login').show()" /></p>
</body>
</html>
solution2
2 2009-12-03 22:21:13
You could try using a modal form for your login. jquery ui do a nice one http://jqueryui.com/demos/dialog/#modal-form which will open up a form for you to use in the centre of the page.
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