.layout.mod_chat_bot {
    position: fixed;
    z-index: 100000;
}

.mod_chat_bot.grey-mask {
    position:absolute;
    width:100%;
    height:100%;
    background-color: #000;
    opacity: 0.5;
    z-index:2000;
}

.mod_chat_bot .collation-search-results {
    position:relative !important;
    max-height:250px;
    overflow: auto;
}