body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    background-color: #f4f4f4;
    color: #333;
}

.container {
    width: 80%;
    margin: 20px auto;
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
}

h1 {
    text-align: center;
    color: #007bff;
}

.login-form {
    margin-bottom: 20px;
    border: 1px solid #ccc;
    padding: 15px;
    border-radius: 5px;
}

.chat-area {
    border: 1px solid #ccc;
    padding: 15px;
    border-radius: 5px;
}

.message-list {
    height: 400px;
    overflow-y: scroll;
    padding: 10px;
}

.message {
    margin-bottom: 5px;
    padding: 8px;
    border-radius: 5px;
    background-color: #e9ecef;
    text-align: right;
}

.message-input {
    margin-top: 10px;
}