body {
    overflow: hidden;
}

.row.vh-100 {
    flex-wrap: nowrap;
}

.col-md-9 {
    display: flex;
    flex-direction: column;
}

#messages {
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}

.message {
    background: #0d6efd;
    color: white;
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 10px;
    width: fit-content;
}