Page content within <div id="content"> is too wide and overflow under right-top "Table of Contents" box. Some text is thus hidden and unreadable. See attachment "content div overflow under TOC - current.png" screenshot.

There is proposed patch:

In file http://logback.qos.ch/css/screen.css on line 118 change from
min-width: 50em;
to
width: 63%;

Result is shown in "content div overflow under TOC - fixed.png" screenshot.