.mode3dvi-3d-viewer-container {
    margin: 20px 0;
    background-color: #eeeeee;
}

.mode3dvi-3d-viewer-container model-viewer {
    display: block;
    width: 100%;
    height: var(--mode3dvi-viewer-height, 600px);
    outline: none;
    --progress-bar-color: #000;
    --progress-bar-height: 2px;
    --poster-color: transparent;
}