body { padding-bottom: 50px;}
#header_nav{ background: #0AAE00; color: #FFF;}
#header_nav a { color: #FFF;}
#header_nav a:hover { background: #3BB4F2; }

#footer_nav { background: #0AAE00; height: 50px; line-height: 50px; text-align: center; position: fixed; bottom: 0; width: 100%;}
#footer_nav a { color: #FFF; font-size: 30px; }