body, .geral, #content{
  filter:none; background: url(http://flashwallpapers.com/wp-content/uploads/2015/12/Automn-Leaves-Yellow-Gold-1024x768.jpg) no-repeat center center fixed; -webkit-background-size: cover; -moz-background-size: cover; -o-background-size: cover; background-size: cover;
}