Question

… because the box (sidebar-1) has a given width of 180px!

Why not …

Het
grote
natuurgebeuren

instead of …

Het
grote natuurgebeuren

Have a look at > http://www.jeannies.nl/txp/teksten

CSS:

ul.article_list li {
color: #444;
font-size: 24px;
line-height: 1.2em;
padding-top: 7px;
padding-left: 6px; /* to line-up with site-name!  */
letter-spacing: 0;
text-transform: none;   
letter-spacing: 0;
margin-bottom: 6px;}

ul.article_list li a {
color: #444;
text-decoration: none;
border-bottom: 0px solid #999;}

ul.article_list li a:hover, ul.article_list li.active a {
color: #444;
text-decoration: none;
border-bottom: 1px solid #999;}

[edit]
Solved … thanks to everybody!

Answer 1

you have a   in your text

Het grote natuurgebeuren

the browsers sees this as a single word.

remove it and natuurgebeuren will drop to the next line

in general a   is not necessary in this case as you have only a single space