Z-index issue

@wordplus, Congrats on the latest update, awesome. The emoji picker however needs a z-index. It is poping up behind the chat window.

body.bm-messages-light .bm-emoji-picker-container {
  z-index: 999;
}

The message wrap more button needs a z-index value also otherwise the more pop-up, shows behind the chat window.

.bp-messages-wrap .bm-messages-list.bm-template-standard .bm-list .bm-messages-stack .bm-content .bm-messages-listing .bm-message .bm-message-content {z-index: 999;}