hubl/src/styles/components/chat.scss

.chat-view {
  padding: 0;
  height: calc(100vh - 84px - 83px);
  position: relative;
  overflow: hidden;

  > sib-chat {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    max-height: calc(100vh - 84px - 83px);
    z-index: 0;
  }
}