Question

我的观点如下

p {
  width: 50%;
  float: left;
}

<div>
  <p>The first paragraph.</p>
  <p>The second paragraph.</p>
  <p>The third paragraph.</p>
  <p><b>Note:</b> Internet Explorer 8 and earlier versions do not support the :nth-child() selector.</p>
</div>

我不允许对html进行任何更改。我要在每两个

标记之后插入一行，如下图所示。（p标记的数量不限于四个。它们可以增加。）

有人可以告诉我该怎么做吗？甚至有可能吗？

Answer 1

div {
    display: flex;
    flex-wrap: wrap;
}
div p {
    max-width: 50%;
    flex-grow: 1;
    flex-basis: 0;
    border-bottom: 1px solid black;
}

Answer 2

这是使用::after伪元素和伪类nth-of-type的一种方式：

p {
  width: 50%;
  float: left;
}

p:nth-of-type(2n)::after {
  content: '';
  border-bottom: 1px solid black;
  display: block;
  width: 200%;
  margin-left: -100%;
}

<div>
  <p>The first paragraph.</p>
  <p>The second paragraph.</p>
  <p>The third paragraph.</p>
  <p><b>Note:</b> Internet Explorer 8 and earlier versions do not support the :nth-child() selector.</p>
  <p>The first paragraph.</p>
  <p>The second paragraph.</p>
  <p>The third paragraph.</p>
  <p><b>Note:</b> Internet Explorer 8 and earlier versions do not support the :nth-child() selector.</p>
  <p>The first paragraph.</p>
  <p>The second paragraph.</p>
  <p>The third paragraph.</p>
  <p><b>Note:</b> Internet Explorer 8 and earlier versions do not support the :nth-child() selector.</p>
</div>

Answer 3

我尝试了一些东西。添加了段落标记的类。

<!DOCTYPE html>
<html>


<head>
    <style>
        p {
            width: 50%;
            float: left;
        }
.sample_line {
    border-bottom: solid;
    max-height: 18px;
    overflow: auto;
}
    </style>
</head>

<body>

    <div>
        <p class="sample_line">The first paragraph.</p>
        <p class="sample_line">The second paragraph.</p>
        <p class="sample_line">>The third paragraph.</p>
        <p class="sample_line">><b>Note:</b> Internet Explorer 8 and earlier versions do not support the :nth-child() selector.</p>

    </div>
</body>

</html>

Answer 4

这是一个带有阴影的想法：

p {
  width: 50%;
  float: left;
  margin: 0;
  padding: 20px 5px;
  box-sizing: border-box;
}

p:nth-child(odd) {
  clear: both;
}

div {
  overflow:auto;
  box-shadow: 0 -2px 0 black inset;
}

p:nth-child(n+3) {
  box-shadow: 0 -2px 0 black;
}

<div>
  <p>The first paragraph.</p>
  <p>The second paragraph.</p>
  <p>The third paragraph.</p>
  <p><b>Note:</b> Internet Explorer 8 and earlier versions do not support the :nth-child() selector.</p>
  <p><b>Note:</b> Internet Explorer 8 and earlier versions do not support the :nth-child() selector.<b>Note:</b> Internet Explorer 8 and earlier versions do not support the :nth-child() selector.</p>
  <p>The third paragraph.</p>
  <p>The third paragraph.</p>
  <p><b>Note:</b> Internet Explorer 8 and earlier versions do not support the :nth-child() selector.</p>
</div>

Answer 5

您还可以使用border-top和margins；因此无需理会段落的高度。

无论如何，如今，您将使用flex或grid而不是float。

div {
  border-bottom: 1px solid;
  overflow: hidden;
}

p {
  width: 50%;
  float: left;
  border-top: 1px solid;
  margin: -2px 0 2px;
}

<div>
  <p>The first paragraph.</p>
  <p>The second paragraph.</p>
  <p>The third paragraph.</p>
  <p><b>Note:</b> Internet Explorer 8 and earlier versions do not support the :nth-child() selector.</p>
  <p><b>Note:</b> Internet Explorer 8 and earlier versions do not support the :nth-child() selector.</p>
  <p>The last paragraph.</p>
</div>

Answer 6

只需在p处添加border-bottom即可，就像您问的那样。没有别的办法了。

 p {
     border-bottom: 1px solid black;
 }

如何将水平线放在两个同级<p>标签下

6 个答案: