expressjs.com/css/search.css

#q {
  display: none;
  height: 2.5em;
  min-width: 100%;
  padding: 5px;
}

.algolia-autocomplete {
  min-width: 12em;
  max-width: 12em;
  top: -0.2em;
}

.algolia-autocomplete #q {
  display: initial
}

@media all and (max-width: 899px) {
  .algolia-autocomplete {
    display: none !important;
  }
}