/* styles for 'sub' navGroup */
.site-sectionnav > section > section > a,
.site-sectionnav > section > section > header {
  color: #333;
  display: block;
}

.site-sectionnav > section > section > a {
  font-size: .88em;
  padding: .25em 1em .25em 1.5em;
  transition: background .25s ease-out;
}
.site-sectionnav > section > section > a:hover {
  background-color: #f4f4f4;
}
.site-sectionnav > section > section > a:visited {
  color: #333;
}

.site-sectionnav > section > section > header {
  font-size: .88em;
  padding: .66667em 1.13636em;
  position: relative;
}
.site-sectionnav > section > section > header:before {
  background-image: linear-gradient(90deg, transparent 0, rgba(0, 0, 0, .1) 2.5em, transparent);
  content: '';
  height: 1px;
  left: 0;
  position: absolute;
  top: 0;
  width: 100%;
}