How to make a sticky footer using CSS?

Question

I want to keep my footer at the bottom of the page. I try this

position: absolute;
left: 0;
bottom: 0;
height: 100px;
width: 100%;

but my footer getting messy. My website is made in WordPress. If possible I don't want to use any plugin for this. And I want to use a pure CSS only.

Here the CSS script

footer #bottom-footer{
background: none repeat scroll 0 0 #FFFFFF;
color: #000000;
border-top: 5px solid #F80000;
text-align: left;
padding: 9px;
font-size: 13px;
}
.footer-wrap a{
color:#000000;
}
.footer-wrap a:hover{
color:#F80000;
}
.footer-logo a {
margin-bottom: 6px;
display: block;
}
.footer-socials {
float: left;
line-height: 0px;
}
.footer-socials a {
border-radius: 100%;
color: #ffffff;
display: inline-block;
font-size: 14px;
height: 30px;
line-height: 30px;
margin-left: 3px;
text-align: center;
vertical-align: middle;
width: 30px;
}
.footer-socials a.facebook {
background: none repeat scroll 0 0 #1f69b3;
}
.footer-socials a.twitter {
background: none repeat scroll 0 0 #43b3e5;
}
.footer-socials a.gplus {
background: none repeat scroll 0 0 #d84734;
}
.footer-socials a.youtube {
background: none repeat scroll 0 0 #df2126;
}
.ak-contact-address .socials a.pinterest {
background: none repeat scroll 0 0 #ff3635;
}
.footer-socials a.linkedin {
background: none repeat scroll 0 0 #1a7696;
}
.footer-socials .socials a.flickr {
background: none repeat scroll 0 0 #e1e2dd;
}
.footer-socials .socials a.vimeo {
background: none repeat scroll 0 0 #7fdde8;
}
.footer-socials .socials a.instagram {
background: none repeat scroll 0 0 #c8c5b3;
}
.footer-socials .socials a.tumblr {
background: #395976;
}
.footer-socials .socials a.rss {
background: none repeat scroll 0 0 #fbc95d;
}
.footer-socials .socials a.github {
background: none repeat scroll 0 0 #383838;
}
.footer-socials .socials a.stumbleupon {
background: none repeat scroll 0 0 #e94c29;
}
.footer-socials .socials a.skype {
background: none repeat scroll 0 0 #09c6ff;
}
.footer-socials .social-icons span {
cursor: pointer;
display: inline-block;
}
.footer-socials .socials i {
-webkit-backface-visibility: hidden;
-moz-backface-visibility: hidden;
backface-visibility: hidden;
}
.tagcloud a{
font-size: 13px !important;
background: rgba(0,0,0,0.4);
padding: 8px 10px;
margin: 0 2px 4px 0;
display: inline-block; 
line-height: 1;
}
.sidebar .tagcloud a{
background: #23A38F;
color: #FFF;
}

Website link

Answer 1

Following a clean method implemented from an online source no longer available (dead link), the minimum code you should need for your page would be (note - probably best to use #bottom-footer instead of footer #bottom-footer for the selection of your footer - that could be part of the issue):

html {
    position: relative;
    min-height: 100%;
}
body {
    margin: 0 0 100px; /* bottom = footer height */
}
#bottom-footer {
    position: absolute;
    left: 0;
    bottom: 0;
    height: 100px;
    width: 100%;
}