What CSS properties govern how a webpage reacts to window resizing?

Tags: html,css,design,resize

Problem :

I just wonder because I know that my page goes haywire if you try to make it too small. Facebook, StackOverflow and almost any other well programmed site calmly adjusts the page format until they run out of 'breathing room' at which point the page is just 'eaten' by the browser's borders. How do these well programmed sites format themselves so nicely as to cope with window resizing? Are there CSS properties specifically made to help with this?

Solution :

You should look into "Fluid" CSS designs. These are CSS rules that are designed to manage a pages width.

A common way of doing this is to use max-width and min-width to manage the over all width of the website.

For example:

Click here to see a live example.

    <title>Width Test</title>
        #main-content {
            background-color: #EEF;
            border: 1px solid #003;
            max-width: 45em;
            min-width: 20em;
            padding: 1em;
            margin: 0 auto; /* center */
        .box {
            border: 1px solid #000;
            background: #363;
            color: #fff;
            padding: .25em;
        .left {
            float: left;
            margin: .5em 1em .5em 0;
        .right {
            float: right;
            margin: .5em 0 .5em 1em;
        <div id="main-content">
            <p>Resize Me...</p>
            <span class="box left">left</span>
            <span class="box right">right</span>
            <p>Fluid Layout</p>

The key element here is the styling on #main-content. The rest of that is so you can see it in action.

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