body {
    text-align: center;
}
#container {
    max-width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}
#left-column {
    max-width: 70%; /* 調整占比 */
    text-align: center;
}
#left-column img {
    height: 850px;
    width: auto;
}
#right-column {
    max-width: 25%; 
}
#chat-box {
    max-width: 100%;
    margin: 20px auto;
    padding: 10px;
    border-radius: 5px;
}
#message {
    max-width: 80%;
    text-align: left;
    height: 50px;
    font-size: 25px;
    left: 0px;
}
#btn {
    height: 50px;
    font-size: 25px;
}
#right-column p {
    text-align: left;
    margin-left: 20px;
    font-size: 30px;
}

@media (max-width: 800px) {
    #container {
        flex-direction: column; /* 寬度低於時切換為上下布局 */
    }
    #left-column {
        max-width: 100%;
    }
    #right-column {
        max-width: 100%;
        margin-top: -125px;
    }
    #left-column img {
        max-width: 100%;
        height: auto;
        
    }
    #chat-box {
        max-width: 100%;
    }
    #right-column p {
        font-size: 30px;
    }
}