.message-container {
    padding: 10px;
    height: 400px;
    overflow-y: scroll;
}
.message {
    margin-bottom: 15px;
    padding: 10px;
    border-radius: 8px;
    max-width: 70%;
    word-wrap: break-word;
}
.message-left {
    background-color: #ffffff;
    border: 1px solid #ddd;
    margin-right: auto;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}
.message-right {
    background-color: #e9ecef;
    margin-left: auto;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}
.message-header {
    font-size: 0.9em;
    color: #555;
    margin-bottom: 5px;
}
.message-content {
    margin: 0;
}