/* dialog at the bottom of the screen */

dialog.bottom {
    width: 800px;
    height: 200px;
    max-width: 100vw;
    border: none;
    outline: none;
    box-shadow: 0 0 1ex black;
    background-image: url(../image/dialog.webp);
    background-repeat: no-repeat;
    background-size: 100% 100%;
    box-sizing: border-box;
    padding: 40px;
    background-color: black;
    color: white;
    bottom: 0;
    font-size: large;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    user-select: none;
}
dialog:open {
    display: flex;
}
#dialog_message.unseen {
    color: yellow;
}
#dialog_message.error {
    color: red;
}
dialog .back {
    color: skyblue;
    cursor: pointer;
    text-decoration: underline;
}
#dialog_bottom {
    position: absolute;
    bottom: 1ex;
}
#dialog_require.bottom {
    background-image: url(../image/require.jpg);
    color: pink;
}

@media (max-width: 600px) {
    dialog.bottom {
        font-size: small;
    }
}