Solved >>98

Install this browser extension:
https://github.com/openstyles/stylus
https://addons.mozilla.org/en-US/firefox/addon/styl-us/

Create userstyle for bbspink.com

Copypaste this in it:

/* ==UserStyle==
@name bbspink better style
@description eh
@author eh
==/UserStyle== */

#sidemenu {
display: none;
}

.col-md-8 {
width: auto;
}

body {
background-image: none;
font-family:"MS PGothic";
font-size:16px;
line-height:normal;
}

.message {
font-size:16px;
line-height:normal;
overflow: visible;
white-space: nowrap;
}