wagtail/client/scss/components/_grid.legacy.scss

.wrapper {
  @include clearfix();
  @apply w-transition-sidebar;
  height: 100vh;

  @include media-breakpoint-up(sm) {
    transform: none;
    padding-inline-start: $menu-width;

    .sidebar-collapsed & {
      padding-inline-start: $menu-width-slim;
    }
  }
}

/**
 * Increase the scroll offset to account for pages with sticky areas - header or footer.
 * We apply this to all pages for simplicity.
 */
@mixin sticky-areas-scroll-offset() {
  $gap: theme('spacing.4');
  // For mobile viewports, expect a sticky header over two rows.
  scroll-padding-top: calc(theme('spacing.slim-header') * 2 + $gap);

  @include media-breakpoint-up(sm) {
    scroll-padding-top: calc(theme('spacing.slim-header') + $gap);
    // Increase the scroll offset to account for pages with sticky bottom button
    scroll-padding-bottom: 100px;
  }
}

.content-wrapper {
  @include sticky-areas-scroll-offset();
  scroll-behavior: smooth;
  width: 100%;
  height: 100%; // this has no effect on desktop, but on mobile it helps aesthetics of menu popout action
  float: inline-start;
  position: relative;
  border-bottom: 1px solid theme('colors.border-furniture');
}

.content {
  @include row();
  background: theme('colors.surface-page');
  border-top: 0 solid transparent; // this top border provides space for the floating logo to toggle the menu
  min-height: 100%;
  position: relative; // yuk. necessary for positions for jquery ui widgets

  @include media-breakpoint-up(sm) {
    padding-bottom: 4em;
  }
}

@include media-breakpoint-up(sm) {
  .content {
    border-top: 0;
    padding-top: 0;
  }
}

.row {
  @include clearfix();
}

@include media-breakpoint-up(sm) {
  .col1 {
    @include column(1);
  }

  .col2 {
    @include column(2);
  }

  .col3 {
    @include column(3);
  }

  .col4 {
    @include column(4);
  }

  .col5 {
    @include column(5);
  }

  .col6 {
    @include column(6);
  }

  .col7 {
    @include column(7);
  }

  .col8 {
    @include column(8);
  }

  .col9 {
    @include column(9);
  }

  .col10 {
    @include column(10);
  }

  .col11 {
    @include column(11);
  }

  .col12 {
    @include column(12);
  }

  .row {
    @include row();
  }

  .row-flush {
    @include row-flush();
  }
}