@-moz-document domain('tryruby.org') {
#content, .stretcher {background-image: none !important;}
#content {background-color: #fff !important;}
h3 {color: black !important;}
.stretcher {color: black !important;}
#irb {font-size: 20px !important; line-height: 20px !important; color: black !important;}
#irb div b {color: white !important; background-color: black !important;}
.note {color: black !important; font-size: medium !important;}
#footer {display: none !important;}
#terminal {background-color: white !important;}
}