bulma/docs/_sass/global/newsletter.scss

:root {
  --newsletter-strip-size: 16px;
  --newsletter-border-size: #{$block-spacing};
}

#newsletter {
  background: $scheme-main-bis;
  padding: var(--newsletter-border-size);
  padding-top: 0;

  .bd-drawing {
    display: none;
  }
}

.bd-newsletter-heading {
  > .icon {
    font-size: $title-size;
    height: 1.125em;
    width: 1.125em;
  }

  .title,
  .subtitle {
    font-weight: $weight-normal;

    strong {
      color: inherit;
      font-weight: $weight-semibold;
    }

    small {
      color: $text-light;
      display: block;
      font-size: 0.75em;
    }
  }

  .subtitle {
    color: $text-light;
  }

  .bd-fat-button {
    font-weight: $weight-normal;

    strong {
      font-weight: $weight-semibold;
    }
  }
}

.bd-newsletter-fields {
  display: grid;
  grid-gap: $block-spacing / 2;
  grid-template-columns: minmax(20em, 1fr) auto;
}

.bd-newsletter-box {
  background-color: $scheme-main;
  background-image: url('/images/hab/newsletter-strip.png');
  background-repeat: repeat-x;
  background-size: 96px var(--newsletter-strip-size);
  border-radius: 1.5em;
  box-shadow: 0 0 0 1px $scheme-main-ter;

  .icon {
    align-self: flex-start;
  }

  form .input {
    &:not(:focus):not(:hover) {
      border-color: $border;
    }
  }
}

@include mobile {
  .bd-newsletter-box {
    padding-top: calc(#{$block-spacing} + var(--newsletter-strip-size));
  }

  .bd-newsletter-fields {
    grid-template-columns: repeat(auto-fill, minmax(14em, 1fr));
  }
}

@include touch {
  .bd-newsletter-heading {
    margin-bottom: var(--bd-index-vertical);

    .icon {
      float: left;
      margin-right: $block-spacing / 2;
    }

    .subtitle {
      margin: ($block-spacing / 2) 0 !important;
    }

    form {
      margin-top: $block-spacing;
    }
  }
}

@include tablet {
  .bd-newsletter-box {
    padding-top: calc(var(--bd-index-vertical) + var(--newsletter-strip-size));
  }
}

@include desktop {
  .bd-newsletter-heading {
    display: grid;
    // prettier-ignore
    grid-template-columns:
      ($block-spacing * 2)
      ($block-spacing * 2)
      1fr
      1fr
      ($block-spacing * 2)
      ($block-spacing * 2);

    > .icon {
      grid-column: 2;
    }

    .title {
      grid-column: 3;
      max-width: 9em;
    }

    .subtitle {
      grid-column: 4;
      max-width: 10em;
    }

    form {
      grid-column: 4;
    }
  }
}

@include widescreen {
  :root {
    --newsletter-border-size: #{$bd-edge-width / 2};
  }

  #newsletter {
    .bd-drawing {
      display: block;
    }
  }

  .bd-newsletter-heading {
    // prettier-ignore
    grid-template-columns:
      ($block-spacing * 3)
      ($block-spacing * 3)
      1fr
      1fr
      ($block-spacing * 3)
      ($block-spacing * 3);
  }

  .bd-newsletter-box {
    box-shadow: 0 1em 2em rgba(black, 0.05);
  }
}

@include from(1780px) {
  .bd-newsletter-heading {
    // prettier-ignore
    grid-template-columns:
      minmax(#{$block-spacing * 2}, 1fr)
      ($block-spacing * 3)
      calc(var(--container-width) / 2)
      calc(var(--container-width) / 2)
      ($block-spacing * 3)
      minmax(#{$block-spacing * 2}, 1fr);
  }
}