bulma/docs/_sass/index/hello.scss

.bd-hello-body {
  display: grid;
  grid-gap: var(--bd-index-gap);
}

.bd-hello-ghbtns {
  margin-bottom: 1em;
  min-height: 30px;

  iframe,
  a,
  img {
    height: 30px;
  }

  a {
    display: inline-block;
    min-width: 100px;
    vertical-align: top;
  }

  img {
    display: block;
  }
}

.bd-hello-buttons {
  .bd-fat-button {
    font-size: 1.125em;
  }
}

.bd-hello-media {
  text-align: center;
}

.bd-hello-video {
  padding-top: 56.25%;
  position: relative;

  > div {
    @include overlay;
  }
}

.bd-hello-shadow {
  background-size: cover;
}

.bd-hello-iframe {
  border-radius: 0.75em;

  iframe {
    height: 100%;
    width: 100%;
  }
}

.bd-hello-author {
  color: $text-light;
  margin-top: 1em;
  opacity: 0.5;

  a {
    color: currentColor;

    &:hover {
      text-decoration: underline;
    }
  }
}

@include mobile {
  .bd-hello {
    grid-gap: var(--bd-index-vertical);
    padding: var(--bd-index-vertical);
  }

  .bd-hello-content {
    .title br {
      display: none;
    }
  }

  .bd-hello-buttons {
    .button {
      margin-right: 0 !important;
      width: 100%;
    }
  }
}

@include tablet {
  .bd-hello {
    align-items: center;
    padding-bottom: var(--bd-index-vertical);
    padding-top: var(--bd-index-vertical);
  }

  .bd-hello-body {
    align-items: center;
    grid-gap: 0;
    grid-template-columns:
      var(--bd-index-gap) 1fr calc(
        calc(var(--container-width) - var(--bd-index-gap)) / 2
      )
      var(--bd-index-gap) calc(
        calc(var(--container-width) - var(--bd-index-gap)) / 2
      )
      1fr var(--bd-index-gap);
  }

  .bd-hello-content {
    grid-column: 3 / span 1;
  }

  .bd-hello-buttons {
    display: grid;
    grid-gap: $block-spacing;
    grid-template-columns: 1fr 1fr;
    margin-bottom: 0 !important;

    .button {
      margin: 0 !important;
      padding-left: 0 !important;
      padding-right: 0 !important;
    }
  }

  .bd-hello-media {
    grid-column: 5 / span 2;
  }

  .bd-hello-sponsors {
    grid-column: 4 / span 4;
  }
}