body, html {
    height: 100%;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: Arial, sans-serif;
}

#chat {
    width: 400px;
    height: 600px;
    border: 1px solid #ccc;
    display: flex;
    flex-direction: column;
    padding: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

#messages {
    flex-grow: 1;
    overflow-y: auto;
    padding: 5px;
    border: 1px solid #ddd;
    margin-bottom: 10px;
}

input, button {
    padding: 10px;
    margin: 5px 0;
    border-radius: 5px;
    border: 1px solid #ddd;
}

button {
    cursor: pointer;
    background-color: #007bff;
    color: white;
    border: none;
}

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

.intro-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.intro-container img {
    width: 50%;
    min-width: 300px;
}

#loader {
    font-size: 25px;
    text-align: center;
}

.kakao-ad {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 20px;
    min-width: 350px;
    min-height: 200px;
}

.logo {
    text-align: center;
}