How do I force a DIV block to extend to the bottom of a page even if it has no content?

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In the markup shown below, I’m trying to get the content div to stretch all the way to the bottom of the page but it’s only stretching if there’s content to display. The reason I want to do this is so the vertical border still appears down the page even if there isn’t any content to display.

Here is my DEMO:

body {
    font-family: Trebuchet MS, Verdana, MS Sans Serif;
    font-size:0.9em;
    margin:0;
    padding:0;
}
div#header {
    width: 100%;
    height: 100px;
}
#header a {
    background-position: 100px 30px;
    background: transparent url(site-style-images/sitelogo.jpg) no-repeat fixed 100px 30px;
    height: 80px;
    display: block;
}
#header, #menuwrapper {
    background-repeat: repeat;
    background-image: url(site-style-images/darkblue_background_color.jpg);
}
#menu #menuwrapper {
    height:25px;
}
div#menuwrapper {
    width:100%
}
#menu, #content {
    width:1024px;
    margin: 0 auto;
}
div#menu {
    height: 25px;
    background-color:#50657a;
}
<form id="form1">
  <div id="header">
      <a title="Home" href="https://stackoverflow.com/questions/147528/index.html" />
  </div>

  <div id="menuwrapper">
      <div id="menu">
      </div>
  </div>

  <div id="content">
  </div>
</form>

18 Answers
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