=sticky-footer($footer_height, $root_selector:"#root", $root_footer_selector:"#root_footer", $footer_selector:"#footer")
html
:height 100%
body
:height 100%
#{$root_selector}
:min-height 100%
:margin-bottom -#{$footer_height}
#{$root_footer_selector}
:height #{$footer_height}
#{$footer_selector}
:clear both
:position relative
:height #{$footer_height}