body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

.chatbox {
    background-color: #f7f7f7;
    border: 1px solid #ddd;
    max-width: 400px;
    margin: 0 auto;
    padding: 10px;
}

.message {
    margin: 5px;
    padding: 8px;
    border-radius: 5px;
}

.received {
    background-color: #c389005b;
    text-align: left;
}

.sent {
    background-color: #cececeb9;
    text-align: right;
}

.system {
    text-align: center;
}

.valid {
    background-color: #9fffa0b9;
}

.error {
    background-color: #ff9f9fb9;
}

.name_received {
    font-weight: bold;
    margin-bottom: 5px;
    font-size: 0.8rem;
    color: #c38700;
}

.name_sent {
    font-weight: bold;
    margin-bottom: 5px;
    font-size: 0.8rem;
}

.input-box {
    display: flex;
    align-items: center;
    max-width: 400px;
    margin: 10px auto;
    padding: 5px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.input-box input {
    flex: 1;
    padding: 5px;
    border: none;
    outline: none;
}

.input-box button {
    padding: 5px 10px;
    background-color: #c38700;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-left: 10px;
}

.input-box button:hover {
    background-color: #d6c49a;
}