notifications-admin/app/assets/stylesheets/components/banner.scss

%banner,
.banner,
.banner-default {

  @include core-19;
  background: $govuk-blue;
  color: $white;
  display: block;
  padding: $gutter-half;
  margin: $gutter-half 0 $gutter 0;
  text-align: left;
  position: relative;
  clear: both;

  &-title {
    @include bold-24;
  }

  p {
    margin: 10px 0 5px 0;
  }

  .list-bullet {
    @include copy-19;
  }

}

%banner-with-tick,
.banner-with-tick {
  padding: $gutter-half ($gutter + $gutter-half);
  background-image: file-url('tick-white.png');
  @include ie-lte(8) {
    background-image: file-url('tick-white-16px.png');
  }
  background-size: 19px;
  background-repeat: no-repeat;
  background-position: $gutter-half $gutter-half;

}

.banner-default-with-tick {
  @extend %banner;
  @extend %banner-with-tick;
}

.banner-dangerous {

  @extend %banner;
  @include bold-19;
  background: $white;
  color: $error-colour;
  border: 5px solid $error-colour;
  margin: 15px 0;
  text-align: left;

  &:focus {
    outline: 3px solid $yellow;
  }

  .button {
    @include button($error-colour);
    margin-top: 10px;
  }

  a {

    &:link,
    &:visited {
      color: $error-colour;
    }

    &:hover {
      color: $mellow-red;
    }

  }

  .list {
    margin-bottom: 0;
  }

}

.banner-tour {

  @extend %banner;
  background: $govuk-blue;
  color: $white;
  margin-top: 10px;
  margin-bottom: 0;
  padding: $gutter;
  height: 425px;
  overflow: hidden;
  box-shadow: inset 0 -1em 1.6em 0 rgba(0, 0, 0, 0.05);

  .heading-medium {
    @include core-24;
  }

  p {

    margin-top: 0;
    margin-bottom: $gutter;

    &:last-child {
      margin-bottom: 0;
    }

    & + p {
      margin-top: -$gutter-half;
    }

  }

  a {

    @include bold-19;
    display: block;
    padding: 0 ;
    margin: 0 0 $gutter 0;

    &:link,
    &:visited {
      color: $white;
    }

    &:hover,
    &:active {
      background-color: $link-hover-colour;
      outline: 10px solid $link-hover-colour;
    }

    &:active,
    &:focus {
      background-color: $yellow;
      outline: 10px solid $yellow;
    }

  }

  .greyed-out-step {

    $opacity: 0.6;

    opacity: $opacity;

    @include ie-lte(8) {
      -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=" + ($opacity * 100) + ")";
    }

  }

}

.banner-warning {

  @extend %banner;
  @include bold-19;
  background: $yellow;
  color: $text-colour;
  border: 5px solid $text-colour;
  margin: $gutter 0 $gutter 0;
  text-align: left;
  padding: 20px;

  .heading-medium {
    @include bold-24;
    margin: 0 0 $gutter-half 0;
  }

  .list {
    margin-bottom: 10px;
  }

  a:link,
  a:visited {
    color: $text-colour;
  }

}