Search code examples
htmlcssheight

what is the issue between float and height:100% of divs


Please see the HTML below:

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <style type="text/css">
        html, body
        {
            padding: 0;
            margin: 0;
            width: 100%;
            height: 100%;
            border: 1px solid red;
        }
        #MainDiv
        {
            width: 100%;
            min-height: 200px;
            height: auto;
            border: 1px solid blue;
        }
        #Contents
        {
            width: 500px;
            margin: 0 auto;
            min-height: 100px;
            height: auto;
            border: 1px solid green;
        }
        #RContents
        {
            float: right;
            width: 200px;
            min-height: 50px;
            height: auto;
            border: 1px solid pink;
        }
        #LContents
        {
            float: right;
            width: 200px;
            min-height: 50px;
            height: auto;
            border: 1px solid yellow;
        }
    </style>
</head>
<body>
    <form id="form1" runat="server">
    <div id="MainDiv">
        <div id="Contents">
            <div id="RContents">
                Right Contents
            </div>
            <div id="LContents">
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
                Left Contents
                <br />
            </div>
        </div>
    </div>
    </form>
</body>
</html>

And this JSFiddle link:
jsfiddle

What is the problem between float and height:100% in my example?

How can I force body , MainDiv and Contents divs To Grow With LContents div?

min-height s are so important

Thanks in advance


Solution

  • Like this:

    http://jsfiddle.net/9TLFM/

    I've cleared the floats using clear:both and removed width and height from body