.cx-billboard-auto > .cx-billboard-variant[hidden] {
  display: none !important;
}

.cx-billboard-auto[data-ad-variant="mobile"] {
  width: 320px;
  min-height: 100px;
  margin-inline: auto;
}

.cx-billboard-auto[data-ad-variant="mobile"] img {
  display: block;
  max-width: 100%;
  height: auto;
}