discourse/app/assets/stylesheets/desktop/queued-posts.scss

.queued-posts {
  .queued-post {
    padding: 1em 0;

    .poster {
      width: 70px;
      float: left;
    }
    .cooked {
      width: $topic-body-width;
      float: left;
    }

    .post-title {
      color: darken(scale-color-diff(), 50%);
      font-weight: bold;
    }

    border-bottom: 1px solid darken(scale-color-diff(), 10%);
  }
}