右侧对齐多行文本CSS省略号失效问题求助

实现多行右对齐文本的CSS省略号时，省略号（…）被隐藏。现有方案仅对text-align: left生效，text-align: right时无效。

现有核心CSS代码 #

p {
  -webkit-line-clamp: 3;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

效果对比 #

• 右对齐效果：
• 左对齐效果：

完整代码示例 #

CSS代码 #

p {
  -webkit-line-clamp: 3;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.text-right {
  text-align: right
}

HTML代码 #

<ul>
  <li>
    <article>
      <div>
        <img src="https://i.ytimg.com/vi/sAa8QyFkVkI/maxresdefault.jpg" alt="">
      </div>
      <div class="description">
        <h2>4 Ways to Conditionally Add Classes in Angular</h2>
        <p class="text-right">
          Hey there, have you ever needed to programmatically add a class to an element in an Angular application? Like, maybe when a button is disabled, we need a class, but then once it’s enabled, we don’t. Or how about when a form goes from an invalid state
          to valid? Well, good news, this is actually pretty easy to do in angular. In this post I’m going to show you four different ways. First we’ll use a method called class binding. Next we’ll use the ngClass directive. After that we’ll use the @HostBinding
          decorator. And finally, we’ll use the Renderer2 addClass() and removeClass() methods. Let’s get to it!
        </p>
        <footer>
          <a href="https://youtu.be/sAa8QyFkVkI">Read More</a>
        </footer>
      </div>
    </article>
  </li>
  <li>
    <article>
      <div>
        <img src="https://i.ytimg.com/vi_webp/91A4-iYK1zY/maxresdefault.webp" alt="">
      </div>
      <div class="description">
        <h2>Create Dynamic Text on a Path with HTML, SVG, and CSS</h2>
        <p>
          When it comes to incorporating irregular shaped text into web projects, we often end up using images. However, there may be a better way – using inline SVG and CSS to create dynamic, responsive, and accessible graphics directly within our HTML. In this
          post, we’ll walk you through the process of achieving this, ensuring our designs are on point while maintaining accessibility and SEO friendliness.
        </p>
        <footer>
          <a href="https://youtu.be/91A4-iYK1zY">Read More</a>
        </footer>
      </div>
    </article>
  </li>
  <li>
    <article>
      <div>
        <img src="https://i.ytimg.com/vi/QIn-hPJNZK0/maxresdefault.jpg" alt="">
      </div>
      <div class="description">
        <h2>CSS Grid Can Do That?!</h2>
        <p>
          With CSS grid we can do some pretty amazing things. We can easily place grid items in the center of containers both horizontally and vertically. We can stack grid items without positioning or negative margins. We can create complex layouts quickly with
          ease. And we can even animate to unknown heights which used to be near impossible in the past. In this video we’ll look at a few of my favorite grid provided abilities.
        </p>
        <footer>
          <a href="https://youtu.be/QIn-hPJNZK0">Read More</a>
        </footer>
      </div>
    </article>
  </li>
  <li>
    <article>
      <div>
        <img src="https://i.ytimg.com/vi/PlldXyuTnUw/maxresdefault.jpg" alt="">
      </div>
      <div class="description">
        <h2>Styling HTML Radio Buttons: A Step-by-Step Guide</h2>
        <p>
          HTML radio buttons are a staple of web forms, but their default appearance leaves much to be desired. In this blog post, we’ll walk through one of my favorite methods to customize the look of radio buttons using CSS, creating a more user-friendly and
          visually appealing experience.
        </p>
        <footer>
          <a href="https://youtu.be/PlldXyuTnUw">Read More</a>
        </footer>
      </div>
    </article>
  </li>
</ul>

解决方案 #

方法一：调整文本方向（基于webkit前缀方案） #

修改.text-right类的CSS，通过direction和unicode-bidi属性让省略号正常显示：

.text-right {
  text-align: right;
  direction: rtl;
  unicode-bidi: plaintext;
}

该方法保留-webkit-line-clamp的原有逻辑，仅调整文本渲染方向，确保省略号不会被容器裁剪。

方法二：伪元素模拟省略号（无前缀兼容方案） #

如果需要更好的浏览器兼容性，可通过伪元素手动添加省略号，同时限制容器高度：

.text-right {
  text-align: right;
  position: relative;
  max-height: 3.6em; /* 根据行高调整，假设行高1.2em，3行则为3*1.2=3.6em */
  overflow: hidden;
  padding-right: 1em; /* 给省略号预留空间 */
}

.text-right::after {
  content: '…';
  position: absolute;
  right: 0;
  bottom: 0;
  background-color: #fff; /* 背景色需与容器背景一致 */
}

此方法不依赖webkit私有属性，兼容性更广，但需要提前计算容器的最大高度，并确保背景色覆盖多余文本。

内容的提问来源于stack exchange，提问作者Lukas