.chat-box-region {
    position: fixed;
    right: 0px;
    bottom: 10px;
    width: 274px;
}

#chat-window .card-body{
    position:relative; 
    overflow: hidden;
}
#chat-log-text {
    position: absolute; 
    bottom:0; 
    left:0;
    overflow-y: scroll;
    overflow-x: hidden;
    height: 100%;
    width: 100%;

}