html{
  overflow-y: auto
}

.message-container{
  position: fixed;
  right: 0;
  top: 0;
  z-index: 999;
  overflow: auto;
  height: 100vh;
}
.message-container::-webkit-scrollbar{
  display: none;
}
.message-container .message{
  min-width: 250px;
  max-width: 250px;
  margin: 25px;
  box-shadow: rgba(0, 0, 0, 0.24) 0px 3px 8px;
}