/* Match the navigation gutters and continue the shared page surface through the header. */
.antrob-platinum.portal-control-layout header.portal-control-header {
    margin-inline: 18px;
    padding-inline: 0;
    background: transparent;
    border-bottom-color: transparent;
    box-shadow: none;
}
@media (max-width: 540px) {
    .antrob-platinum.portal-control-layout header.portal-control-header { margin-inline: 8px; }
}
.antrob-platinum.portal-control-layout header.portal-control-header > .portal-control-heading {
    background: transparent;
    box-shadow: none;
}