body {
    font-family: sans-serif;
    background-color: #083B4A;
}

.chat-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid #00A9E0;
    border-radius: 10px;
    overflow: hidden;
}

.chat-box {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
    background-color: #083B4A;
    color: white;
}

.input-container {
    display: flex;
    padding: 20px;
    background-color: #5A633A;
}

#message-input {
    flex-grow: 1;
    border: none;
    padding: 10px;
    border-radius: 5px;
    background-color: #FFFFFF;
    color: #083B4A;
}

#send-button {
    border: none;
    background-color: #00A9E0;
    color: white;
    padding: 10px 15px;
    margin-left: 10px;
    border-radius: 5px;
    cursor: pointer;
}

@media (max-width: 600px) {
    .input-container {
        flex-direction: column;
    }

    #send-button {
        margin-top: 10px;
        margin-left: 0;
    }
}