body {
    font-family: Arial, sans-serif;
    background-color: #f0f2f5;
    margin: 0;
    padding: 0;
}

.form-container,
.chat-container {
    margin: 50px auto;
    background: #fff;
    padding: 20px;
    max-width: 400px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.form-container input,
.form-container button {
    width: calc(100% - 22px);
    padding: 10px;
    margin: 8px 0;
    border-radius: 4px;
    border: 1px solid #ccc;
}

.form-container button {
    background: #007bff;
    color: #fff;
    border: none;
    cursor: pointer;
}

.form-container button:hover {
    background: #0056b3;
}

.chat-container {
    max-width: 800px;
}

.chat-container header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #007bff;
    color: #fff;
    padding: 10px;
    border-radius: 8px 8px 0 0;
}

.messages {
    height: 400px;
    overflow-y: auto;
    background: #f9f9f9;
    padding: 20px;
}

.message {
    margin-bottom: 10px;
}

.message .user {
    font-weight: bold;
}

.message .time {
    float: right;
    font-size: 0.8em;
    color: #666;
}

.message-form {
    display: flex;
    flex-direction: column;
    border-top: 1px solid #ddd;
    padding-top: 10px;
}

.message-form input {
    width: 100%;
    padding: 15px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1em;
    height: 60px;
}

.message-form button {
    width: 100%;
    padding: 12px;
    background: #28a745;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
}

.message-form button:hover {
    background: #218838;
}