discourse/app/assets/stylesheets/common/components/keyboard_shortcuts.css.scss

.topic-list-item td:first-child, .topic-post {
  background-color: inherit;
  border-left: 1px solid transparent;
}

.topic-list-item.selected td:first-child, .topic-post.selected {
  border-left: 1px solid $topic-list-starred-color;
}

.topic-list-item.selected {
  background-color: inherit;
}

.keyboard-shortcuts-modal .modal-body {
  max-height: 500px;
}

#keyboard-shortcuts-help {
  ul {
    list-style: none;
    padding-left: 0;

    li {
      margin: 5px 0
    }

    b {
      background-color: $nav-stacked-divider-color;
      color: $nav-stacked-color;
      display: inline-block;
      margin: 0 2px;
      padding: 2px 4px;
    }
  }
}