.portal-ad {
  max-width: 100%;
  margin: 16px auto;
  text-align: center;
}

.portal-ad__image {
  width: auto;
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

.portal-ad__link {
  display: inline-flex;
  max-width: 100%;
}

.portal-ad__html {
  max-width: 100%;
  overflow: hidden;
}

.portal-ad ins,
.portal-ad iframe {
  max-width: 100%;
}