Position footer at the bottom of the page - html

Question

I have a fairly complex layout that I am building, it relies on a is affected by height, and min-height's so the usual tricks to position the footer at the bottom aren't working.
Given my JSFiddle how can I position the footer at the bottom when the content is a lot or minimal?
Here is some of the css I am currently using:
body, html, #wrapper {
height: 100%;
min-height: 100%;
}
.header {
height: 30%;
background-color: aliceblue;
}
.main {
background-color: antiquewhite;
}
.main .content {
height: 2000px;
background-color: aquamarine;
padding-bottom:80px;
}
.footer {
position: absolute;
bottom: 0;
left: 0;
right: 0;
height: 80px;
background-color: beige;
}

Answer 1

If I understand your requirement correctly, you want the footer to sit at the bottom of the content box.
One solution is to make the content box position:relative and move the footer inside it, so that its position:absolute will bind it to the content box, and the bottom:0 will achieve the desired effect of having it sit against the bottom of said content box.
See http://jsfiddle.net/wn6uvske/5/.
HTML:
<div id="wrapper">
<div id="sidebar"></div>
<div id="body-content">
<div class="header">
<div class="navbar navbar-default" role="navigation">
<div class="container">
<ul class="nav navbar-nav navbar-right">
<li>Toggle Menu
</li>
</ul>
</div>
</div>
</div>
<div class="main">
<div class="content container">
<p>Content</p>
<div class="footer"> <!-- moved up into content container -->
<p>Footer</p>
</div>
</div>
</div>
</div>
</div>
(relevant) CSS:
.main .content {
height: 2000px;
background-color: aquamarine;
padding-bottom:80px;
position:relative;
}
.footer {
position: absolute;
bottom: 0;
left: 0;
right: 0;
height: 80px;
background-color: beige;
}

Answer 2

you can use the sticky footer trick. Wrap all of your content in a wrapper excluding the footer, set min-height:100% and margin: -(footer height) on said wrapper to keep it at the bottom:
FIDDLE
UPDATE
You can take the header section out and use CSS calc() to adjust the height:
NEW FIDDLE