.ads-filter-wrap {
  margin: 0 0 1rem;
}
.ads-filter-form {
  display: inline-flex;
  gap: .5rem;
  align-items: center;
}

/* Liste déroulante : fond noir, bordure blanche, coins arrondis, largeur 169px */
#ads-orderby {
  background-color: #000;
  color: #fff;
  border: 1px solid #fff;
  border-radius: 6px;
  width: 169px;
  padding: 6px 10px;
  font-size: 14px;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  cursor: pointer;
}
#ads-orderby::-ms-expand { display: none; }