A generic CSS for styling sitemap menu links created by menu block module.

sitemap.css

/* Sitemap */
#ui-content .ui-block-menu_block {
  font-size: 13px;
}
#ui-content .ui-block-menu_block ul {
  line-height: 1;
  margin: 0;
  float: left;
  padding: 0;
}
#ui-content .ui-block-menu_block ul li {
  float: left;
  list-style: none outside none;
  margin: 0 10px 0 0;
  max-width: 180px;
  padding: 0;
  width: auto;
}
#ui-content .ui-block-menu_block ul li a {
  border-bottom: 3px solid #E1E1E1;
  display: inline-block;
  font-weight: bold;
  line-height: 1.2;
  padding: 0.5em 10px 0.5em 3px;
  text-decoration: none;
  text-transform: uppercase;
}
#ui-content .ui-block-menu_block ul li ul {
}
#ui-content .ui-block-menu_block ul li ul li {
  float: none;
  width: auto;
}
#ui-content .ui-block-menu_block ul li ul li ul {
  margin-left: 15px;
}
#ui-content .ui-block-menu_block ul li ul li a {
  border-bottom: 0 none;
  border-left: 3px solid #E1E1E1;
  font-weight: normal;
  padding-left: 10px;
  text-transform: none;
  color: #666;
}
#ui-content .ui-block-menu_block a:hover {
  background-color: rgba(255, 255, 255, 0.5);
  border-color: #0085B5;
  color: #0085B5;
}