bbPress.org

if that doesn’t work, then out it in your theme’s style.css, but tag it as !important

#bbpress-forums, #buddypress {
 clear: both !important;
 margin-bottom: 20px !important;
 overflow: hidden !important;
 font-size: 12px !important;
 padding:20px !important;
 background:rgb(10, 9, 9) !important;
}