.new-topics { /* new-topics */
  margin: 0 0 10px;
  padding-left: 20px;
  background-image: url(http://www.hachitaro.com/test/img/topic_arrow/200x200/);
  background-repeat: no-repeat;
  background-position: 0 4px;
}

#new-topics-wrapper { /* new-topics-wrapper */
  list-style-type: none;
  margin-left: 0px;
}

.new-topics { /* new-topics */
  list-style-image: url(http://www.hachitaro.com/kawasaki_chikka/img/topiclist/12x12/);
  padding-left: 5px;
  margin-left: 20px;
}