wagtail/client/scss/layouts/_chooser-duplicate-upload.scss

.duplicate-upload {
  &__figure {
    display: flex;
    flex-direction: column;
    align-items: center;

    img {
      margin: 1rem auto;
    }
  }

  &__actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 2.5rem;

    .use-existing-image {
      margin-inline-start: 1rem;
    }
  }
}