.section-submenu {
  margin: 0 0 20px;
  border-top: 1px solid #eee;
  border-bottom: 1px solid #eee;
  background: #f4f4f4;
}

.section-submenu ul {
  display: flex;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}

.section-submenu .menu-item a {
  display: block;
  padding: 12px 18px;
  text-decoration: none;
  color: #333;
  border-right: 1px solid rgba(0, 0, 0, .06);
}

.section-submenu .menu-item:first-child a {
  border-left: 1px solid rgba(0, 0, 0, .06);
}

.section-submenu .menu-item.is-active a {
  color: #ff6a00;
  /* màu active */
  background: #fff;
  font-weight: 600;
}