site/docs/4.0.0-preview2/api/python/_static/nbsphinx-gallery.css

.nbsphinx-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 5px;
    margin-top: 1em;
    margin-bottom: 1em;
}

.nbsphinx-gallery > a {
    padding: 5px;
    border: 1px dotted currentColor;
    border-radius: 2px;
    text-align: center;
}

.nbsphinx-gallery > a:hover {
    border-style: solid;
}

.nbsphinx-gallery img {
    max-width: 100%;
    max-height: 100%;
}

.nbsphinx-gallery > a > div:first-child {
    display: flex;
    align-items: start;
    justify-content: center;
    height: 120px;
    margin-bottom: 5px;
}