bulma/docs/_sass/pages/videos.scss

.bd-video {
  --spacing: 1.5rem;
  display: grid;
  grid-template-columns: 1fr;
  padding: var(--spacing);

  &:not(:last-child) {
    border-bottom: 2px solid var(--videos-light);
  }
}

.bd-video-figure {
  img,
  video {
    max-width: 100%;
    vertical-align: top;
  }
}

@include mobile {
  .bd-video {
    grid-gap: var(--spacing);
  }
}

@include tablet {
  .bd-video {
    --spacing: 3rem;
    grid-template-columns: 1fr 24em 4em calc(var(--container-width) - 28em) 1fr;
  }

  .bd-video-info {
    grid-column: 2;
  }

  .bd-video-figure {
    grid-column: 4 / span 2;

    img {
      max-width: 1440px;
    }

    video {
      max-width: 1280px;
    }
  }
}

@include desktop {
  .bd-video {
    --spacing: 4.5rem;
  }
}