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;
}