Truncate text in one line, if needed add ellipsis.…

3. truncate text in multiple lines(with ellipsis)

1. center an element vertically

2. truncate text in one line(with ellipsis)

<pre class="shiki github-dark shaku"><code>.one-line { /* your code here */ white-space: nowrap; overflow: hidden; text-overflow: ellipsis;}</code></pre>