border-color: rgba(0, 0, 0, 0.8);
      box-shadow: 0 0 .05em rgba(0, 0, 0, 0.4);
      color: rgba(0, 0, 0, 1);
    }

    #aligner {
      display: flex;
      flex: 0 0 auto;
      align-self: center;
    }
    </style>
    <div id="aligner">
      <slot></slot>
    </div>
  </template>
</dom-module><style>

.list-group-item:last-child {\n      @include border-bottom-radius($card-border-radius);\n    }\n  }\n}\n\n.card-body {\n  // Enable `flex-grow: 1` for decks and groups so that card blocks take up\n  // as much space as possible, ensuring footers are aligned to the bottom.\n  flex: 1 1 auto;\n  padding: $card-spacer-x;\n  color: $card-color;\n}\n\n.card-title {\n  margin-bottom: $card-spacer-y;\n}\n\n.card-subtitle {\n  margin-top: -$card-spacer-y / 2;\n  margin-bottom: 0;\n}\n\n.card-text:last-child...