AdminLte/src/scss/_app-main.scss

.app-main {
  position: relative;
  display: flex;
  flex-direction: column;
  grid-area: #{$lte-prefix}app-main;
  max-width: 100vw;
  padding-bottom: $lte-app-main-padding-bottom;
  @include transition($lte-transition-speed $lte-transition-fn);

  .app-content-header {
    padding: 1rem $lte-content-padding-x;

    .breadcrumb {
      padding: 0;
      margin-bottom: 0;
      line-height: 2.5rem;

      a {
        text-decoration: none;
      }
    }
  }

  .app-content-top-area,
  .app-content-bottom-area {
    color: $lte-app-content-bottom-area-color;
    background-color: $lte-app-content-bottom-area-bg;
  }

  .app-content-top-area {
    padding: $lte-app-content-top-area-padding-y $lte-app-content-top-area-padding-x;
    border-bottom: $lte-app-content-top-area-top-border;
  }

  .app-content-bottom-area {
    padding: $lte-app-content-bottom-area-padding-y $lte-app-content-bottom-area-padding-x;
    margin-top: auto;
    margin-bottom: $lte-app-content-bottom-area-margin-bottom;
    border-top: $lte-app-content-bottom-area-top-border;
  }
}