Strange layout behaviour
- by andrii
I am a little bit confused. Here is an small web page.
There are two main div-s: top and mainBlock.
First contain image. The problem is that firebug shows that div#top's height is equal to 0 and because of that the next div mainBlock moves up. If I would delete this peace of code:
div#logo{
float: left;
}
everything will start working fine and div#mainBlock will be below the div#top. Could you, please, explain me how it works and how to avoid this in proper way?
Here is my code:
<!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>Paralab - Website & interface design, web apps development, usability</title>
<style text="text/css">
html, body{
}
div#logo{
float: left;
}
#top{
width: 100%;
}
#mainBlock{
width:100%;
}
</style>
</head>
<body>
<div id="top">
<div id="logo">
<img alt="logo" src="img/logo.png" />
</div>
</div>
<div id="mainBlock">
Contact Us
</div>
</body>
</html>
