elm-autocomplete.css

.autocomplete-menu {
    position: relative;
    margin-top: 5px;
    background: white;
    color: black;
    border: 1px solid #DDD;
    border-radius: 3px;
    box-shadow: 0 0 5px rgba(0,0,0,0.1);
    min-width: 120px;
}

.autocomplete-item {
    display: block;
    padding: 5px 10px;
    border-bottom: 1px solid #DDD;
    cursor: pointer;
}

.key-selected {
    background-color: #3366FF;
}

.mouse-selected {
    background-color: #ececec;
}

.autocomplete-list {
    list-style: none;
    padding: 0;
    margin: auto;
    max-height: 200px;
    overflow-y: auto;
}

.autocomplete-list-with-sections {
  ist-style: none;
  padding: 0;
  margin: auto;
}

.autocomplete-input {
    min-width: 120px;
    color: black;
    font-size: 12px;
    padding: 4px;
    border-radius: 4px;
    background-color: white;
}

.autocomplete-section-list {
  list-style: none;
  padding: 0;
  margin: auto;
  max-height: 200px;
  overflow-y: auto;
}

.autocomplete-section-item {
  display: block;
  padding: 0;
}

.autocomplete-section-box {
  display: block;
  padding: 0;
  border-top: 1px solid #888888;
  border-bottom: 1px solid #888888;
}

.autocomplete-section-text {
  display: flex;
  justify-content: center;
}