body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
}

.chat-container {
    width: 100%;
    max-width: 600px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.chat-box {
    height: 400px;
    overflow-y: auto;
    padding: 20px;
    border-bottom: 1px solid #ddd;
}

.message {
    margin-bottom: 10px;
    padding: 10px;
    background-color: #e0e0e0;
    border-radius: 5px;
}

input[type="text"] {
    width: calc(100% - 80px);
    padding: 10px;
    border: none;
    border-top: 1px solid #ddd;
    outline: none;
}

button {
    width: 80px;
    padding: 10px;
    border: none;
    background-color: #007bff;
    color: #fff;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}