message: fix card width in sidebars
diff: }
  :host /deep/ mdl-card {
  - min-height: initial;
  + min-height: 0;
  + width: auto;
  margin: 5px;
  }
  .mdl-tabs__tab {
  width: 100%;
  }
  - width: 340px;
  }
  :host /deep/ mdl-card-supporting-text {
  