Detailed explanation of how to center a single line in CSS, center two lines on the left, and end more than two lines with an ellipsis

Solving problems does not consider compatibility. The questions are wild and unconstrained. Just say whatever comes to mind. If there are CSS properties that you feel are unfamiliar in the problem solving, go and learn about it quickly.

Keep updating, keep updating, keep updating, say important things three times.

5. A single line of text is displayed in the center, multiple lines are displayed on the left, and a maximum of two lines are ended with an ellipsis

This question is amazing for me elder brother.

The question is as required. Use pure CSS to display a single line of text in the center and multiple lines of text on the left. A maximum of two lines must end with an ellipsis. The effect is as follows:

If you don’t want to read a long article, you can take a look at the effect first: -webkit- Demo under the kernel. Click me

The next step is One step to achieve this effect.

The first is to center a single line, and center multiple lines to the left

To center, you need to use <a href="http://www.php.cn/wiki/870.html" target="_blank">text-align</a>:center , left is the default value, which is text-align<a href="http://www.php.cn/wiki/974.html" target="_blank">:left</a>. What if we combine the two to achieve a single row in the center and multiple rows in the left? This requires one more tag. Suppose we define it as follows at the beginning:

<h2>单行居中，多行居左</h2>

Now, we are nesting one more layer of tags p in the middle of h2 ：

<h2></h2><p>单行居中，多行居左</p>

Let the inner layer p be on the left text-align:left, and the outer layer h2 Center text-align:center, and set p to <a href="http://www.php.cn/wiki/927.html" target="_blank">display</a>:inline-block, using inline-block Elements can be centered by the parent text-align:center, so that single rows can be centered and multiple rows can be left. The CSS is as follows:

p {
    display: inline-block;
    text-align: left;
}
h2{
    text-align: center;
}

Get The effect is as follows:

Omit more than two lines

After completing the first step, the next thing to be implemented is Displays ellipses beyond two lines.

Multiple line omission can be achieved by special new CSS properties, but some compatibility is not good. The following are mainly used:

• ##display: -webkit-box; //Set the display to display the object as an elastic expansion box model

• -webkit-line-clamp: 2; // Limit the number of lines of text displayed in a block element

• -webkit-box-orient: vertical; // Specifies that the child elements of the box should be arranged horizontally or vertically

上述 3 条样式配合 <a href="http://www.php.cn/wiki/923.html" target="_blank">overflow</a> : hidden 和 <a href="http://www.php.cn/wiki/868.html" target="_blank">text-overflow</a>: ellipsis 即可实现 webkit 内核下的多行省略。好，我们将上述说的一共 5 条样式添加给 p 元素

p {
    display: inline-block;
    text-align: left;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}
h2{
    text-align: center;
}

看看效果如下：

（在 -webkit- 内核浏览器下）发现，虽然超出两行的是被省略了，但是第一行也变回了居左，而没有居中。

看回上面的 CSS 中的 p 元素，原因在于我们第一个设置的 display: inline-block ，被接下来设置的display: -webkit-box 给覆盖掉了，所以不再是 inline-block 特性的内部 p 元素占据了一整行，也就自然而然的不再居中，而变成了正常的居左展示。

记得上面我们解决单行居中，多行居左时的方法吗？上面我们添加多了一层标签解决了问题，这里我们再添加多一层标签，如下：

<h2></h2><p><em>单行居中，多行居左<em></em></em></p>

这里，我们再添加一层 em 标签，接下来，

• 设置 em 为 display: -webkit-box

• 设置 p 为 inline-block

• 设置 h2 为 text-align: center

嘿！通过再设置多一层标签，解决 display 的问题，完美解决问题，再看看效果，和一开始的示意图一样：

-webkit- 内核下 Demo 戳我

法二: 伪元素单行绝对定位障眼法

是的，还有第二种方法......

上面我们为了让第一行居中，使用了三层嵌套标签。

这次我们换一种思路，只使用两层标签，但是我们加多一行。结构如下：

<p>
    </p><h2>
        </h2><p>我是单行标题居中</p>
        <p>我是单行标题居中</p>
    

这里，新添加了一行 class 为 pesudo 的 p 标签，标签内容与文本内容一致，但是我们限定死class="pesudo" 的 p 标签高度 height 与上面的 p 的行高 <a href="http://www.php.cn/wiki/864.html" target="_blank">line-height</a>一致，并设置 overflow:hidden ，那么这个 p 标签最多只能能展示出一行文本，接下来使用绝对定位，定位到 h2 的顶部，再设置 text-align:center 以及背景色与 h2 背景色一致。

这样最多显示单行且样式为居中的 class="pesudo" p 标签就重叠到了原本的 p 标签之上。表现为单行居中，多行时第一行则铺满，解决了我们的问题。多行省略与方法一相同。CSS 如下：

<p>
    </p><h2>
        </h2><p>我是单行标题居中</p>
        <p>我是单行标题居中</p>
    

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