div.importobjects3d-widget {
    padding: 0 0.5em 0.5em 0.5em;
}

div.importobjects3d-widget > div > * {
    width: 100%;
}

div.importobjects3d-widget > div > button {
    margin-top: 0.25em;
    width: 100%;
}

div.importobjects3d-widget > div > button > div.spinner {
    width: 1.5em;
    height: 1.5em;
    margin-right: 0.25em;
    display: inline-block;
    flex: 0 0 auto;
}