.portal-ad {
    width: 100%;
    max-width: 970px;
    min-height: 112px;
    margin: clamp(1.5rem, 4vw, 2.5rem) auto;
    padding: .75rem;
    border: 1px solid rgba(226, 232, 240, .82);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, .72);
}

.portal-ad__label {
    display: block;
    margin-bottom: .45rem;
    color: var(--color-text-soft);
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-align: center;
    text-transform: uppercase;
}

.portal-ad--content-mid,
.portal-ad--content-end {
    min-height: 128px;
}

.portal-ad--desktop-sidebar {
    max-width: 336px;
    min-height: 280px;
    margin-top: 1.25rem;
    margin-bottom: 1.25rem;
}

@media (max-width: 991.98px) {
    .portal-ad--desktop-sidebar {
        display: none;
    }
}

@media (max-width: 575.98px) {
    .portal-ad {
        min-height: 96px;
        margin: 1.25rem auto;
        padding: .5rem;
    }
}