.chat-box {
            height: 500px;
            overflow-y: scroll;
            background-color: #f7f7f7;
            border: 1px solid #ddd;
            padding: 10px;
        }

        .message {
            margin-bottom: 20px;
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            max-width: 60%;
            padding: 10px;
            border-radius: 15px;
        }

        .message.sent {
            align-self: flex-start;
            background-color: #007bff;
            color: #fff;
        }

        .message.received {
            align-self: flex-end;
            background-color: #fff;
            border: 1px solid #ddd;
            
        }

        .message .content {
            font-size: 16px;
            padding: 5px;
        }

        .message .timestamp {
            font-size: 0.8rem;
            color: #000000;
            align-self: flex-end;
        }

        .message.received .timestamp {
            align-self: flex-start;
        }

        .input-group {
            margin-top: 20px;
        }

        .input-group input[type="text"] {
            border: none;
            border-radius: 0;
            border-bottom: 1px solid #007bff;
        }

        .input-group button {
            background-color: #007bff;
            color: #fff;
            border: none;
            border-radius: 0;
        }