* {
    margin: 0;
    padding: 0;
}

html {
    width: 100%;
    height: 100%;
}

body {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: '文道趣黑';
    
    -webkit-user-select: none;
    user-select: none;
}

#viewportBody {
    background-color: #222;
}

#mainViewport {
    background-color: #fff;
    border: 6em solid #ccc;
    border-radius: 20em;
    overflow: hidden;
}


/* #region frame */

iframe {
    border: none;
    width: 100%;
    height: 100%;
}

.base-frame {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

/* #endregion */

/* #region utils */

.hidden {
    display: none !important;
}

.inactive {
    pointer-events: none !important;
}

/* #endregion */