Template:Navbox/styles.css

.navbox {
  border: 1px solid #a2a9b1;
  background: #f8f9fa;
  border-collapse: collapse;
  margin: 1em 0;
  width: 100%;
  font-size: 90%;
}

.navbox-title {
  background: #e9ecef;
  font-weight: 600;
  padding: 0.35em 0.6em;
  text-align: center;
}

.navbox-group {
  background: #f1f3f5;
  white-space: nowrap;
  padding: 0.3em 0.6em;
  text-align: left;
  vertical-align: top;
}

.navbox-list {
  padding: 0.3em 0.6em;
  text-align: left;
}

.navbox-above,
.navbox-below {
  background: #f1f3f5;
  padding: 0.4em 0.6em;
}