/* Store all your css for banners in here*/
#banner{
}

#banner img{
}

#banner p{
}

#banner-left{
}

#banner-right{
}

#banner-left img{
}

#banner-right img{
}

#banner-right p{
}
/* You get the idea */
/* If you want to change the divs or elements just go back to the template file */