<style>background-color:#000 !important;</style>
<style>body{ background-image:url(http://blogs.berrikuntzazerbitzua.net/files/2008/03/hola-11.jpg) !important ; }</style>
<script>alert("hola");</script>
Introduce los comentarios que quieras.
<style>
background-color:#000 !important;
</style>
<style>
body{
background-image:url(http://blogs.berrikuntzazerbitzua.net/files/2008/03/hola-11.jpg) !important ;
}
</style>
<script>
alert("hola");
</script>