Keep footer with variable height on bottom

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Question Description

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I need to keep a footer on bottom, but its height is variable so main solutions are not suitable for me…

examples of what I can’t do:
http://www.cssstickyfooter.com/
http://matthewjamestaylor.com/blog/bottom-footer-demo.htm

Anyone have a solution for flexible footers?
Thanks

Practice As Follows

2014 UPDATE: The modern way to solve this layout problem is to use the flexbox CSS model. It’s supported by all major browsers and IE11+.


Here’s a solution for sticky footer of flexible height using divs with display: table-row:

html, body {
  height: 100%;
  margin: 0;
}
.wrapper {
  display: table;
  height: 100%;
  width: 100%;
  background: yellow;
}
.content {
  display: table-row;
  /* height is dynamic, and will expand... */
  height: 100%;
  /* ...as content is added (won't scroll) */
  background: turquoise;
}
.footer {
  display: table-row;
  background: lightgray;
}

Content

What needs to be noted is that CSS was designed to layout documents, not web application screens. The CSS display: table properties are very valid though, and are supported in all major browsers. This is not the same as using structural tables for layout.