Implement various application scenarios of CSS :empty pseudo-class selector

To implement multiple application scenarios of CSS :empty pseudo-class selector, specific code examples are required

CSS is a language used to control web page styles, which can be Selector to select and style elements in a document. Among them, the :empty pseudo-class selector is used to select elements that have no child elements. This article will introduce: various application scenarios of the empty pseudo-class selector and provide specific code examples.

1. Hide empty elements

By using the :empty pseudo-class selector, we can hide empty elements in the page. For example, if you need to hide empty paragraph elements, you can use the following code:

p:empty {
  display: none;
}

2. Increase the style of empty elements

Conversely, we can also add specific styles for empty elements style. For example, if you need to add a border and background color to an empty div element, you can use the following code:

div:empty {
  border: 1px solid #000;
  background-color: #f0f0f0;
}

3. Set the style of the empty list

Sometimes, we need to Empty lists are treated specially. By using the :empty pseudo-class selector, we can add styles to list items that have no child elements. For example, if you need to add a specific style to an

element that has no child elements, you can use the following code:

li:empty {
  color: red;
  font-weight: bold;
}

4. Hide empty table cells

When the table When some cells in are empty, we can use the :empty pseudo-class selector to hide these cells. For example, if you need to hide empty cells in the table, you can use the following code:

td:empty {
  display: none;
}

5. Adjust the style of empty links

Sometimes, we want to have no text content links are treated specially. By using the :empty pseudo-class selector, we can add custom styles for empty links. For example, if you need to underline a link with no text content, you can use the following code:

a:empty {
  text-decoration: underline;
}

To summarize, by using CSS’s :empty pseudo-class selector, we can hide empty elements and add empty elements. Style, set the style of empty lists, hide empty table cells, adjust the style of empty links and other application scenarios. The above are some specific code examples, I hope they will be helpful to everyone. If you are also interested in CSS selectors, you can continue to learn more and explore more applications.

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