src/platform/site-wide/sass/modules/_m-drupal-sidebarnav.scss
.va-drupal-sidebarnav {
.usa-sidenav-sub_list {
a.usa-current {
margin-left: 0 !important;
}
}
a + .usa-sidenav-sub_list, li > .usa-sidenav-sub_list {
display: none;
}
a.usa-current + .usa-sidenav-sub_list,
.usa-sidenav-sub_list + a.usa-current,
li.active-level > .usa-sidenav-sub_list {
display: block;
}
}