docs/css/auto-complete.css

.autocomplete-suggestions {
    text-align: left;
    cursor: default;
    border: 1px solid #ccc;
    border-top: 0;
    background: #fff;
    box-shadow: -1px 1px 3px rgba(0,0,0,.1);

    /* core styles should not be changed */
    position: absolute;
    display: none;
    z-index: 9999;
    max-height: 254px;
    overflow: hidden;
    overflow-y: auto;
    box-sizing: border-box;
    
}
.autocomplete-suggestion {
    position: relative;
    cursor: pointer;
    padding: 7px;
    line-height: 23px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: #333;
}

.autocomplete-suggestion b {
    font-weight: normal;
    color: #1f8dd6;
}

.autocomplete-suggestion.selected {
    background: #333;
    color: #fff;
}

.autocomplete-suggestion:hover {
    background: #444;
    color: #fff;
}

.autocomplete-suggestion > .context {
    font-size: 12px;
}