Here are a few title options, combining question format with the article\'s focus on LESS & ampersands: * Why do I see an ampersand (&) in LESS pseudo-element selectors? * What does the amper

Ampersand (&) in CSS Pseudo-Element Selectors

In CSS, you may encounter an ampersand (&) character placed before a pseudo-element selector. This usage is not part of standard CSS but is commonly seen in preprocessing languages like LESS.

LESS Syntax

In LESS, the ampersand serves as a nesting operator, allowing you to select nested elements more concisely. It represents the parent selector and can be used to chain multiple selectors.

Consider this LESS syntax:

.clearfix {
  &:before,
  &:after {
    display: table;
    content: "";
  }
  &:after {
    clear: both;
  }
}

Here, the ampersands before :before and :after indicate that these pseudo-elements are nested within .clearfix. This syntax will compile to the following CSS:

.clearfix:before,
.clearfix:after {
  display: table;
  content: "";
}
.clearfix:after {
  clear: both;
}

Example

For instance, the following LESS code:

.example {
  &:hover {
    color: red;
  }
}

Will compile to:

.example:hover {
  color: red;
}

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