Less

Less is an open source stylesheet language created in 2009 by Alexis Sellier.

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Less (sometimes stylized as LESS) is a dynamic style sheet language that can be compiled into Cascading Style Sheets (CSS) and run on the client side or server side. Designed by Alexis Sellier, Less is influenced by Sass and has influenced the newer "SCSS" syntax of Sass, which adapted its CSS-like block formatting syntax. Less is open source. Read more on Wikipedia...

Less website
Less Wikipedia page
There are at least 12,105 Less repos on GitHub
Less first developed in https://github.com/less
file extensions for Less include less
The Google BigQuery Public Dataset GitHub snapshot shows 2k users using Less in 3k repos on GitHub
ANTLR grammar for Less
Monaco package for syntax highlighting Less
Pygments supports syntax highlighting for Less
GitHub supports syntax highlighting for Less
lesscss.org was registered in 2009
See also: (5 related languages)JavaScript, Sass, CSS, Ruby, Stylus

Example from Riju:

body:before {
  content: "Hello, world!";
}

Example from hello-world:

body::before {
    content: "Hello World"
}

Example from Linguist:

@blue: #3bbfce;
@margin: 16px;

.content-navigation {
  border-color: @blue;
  color:
    darken(@blue, 9%);
}

.border {
  padding: @margin / 2;
  margin: @margin / 2;
  border-color: @blue;
}

Example from Wikipedia:

#header {
  color: #333333;
  border-left: 1px;
  border-right: 3px;
}
#footer {
  color: #114411;
  border-color: #7d2717;
}

Feature	Supported	Token	Example
Strings	✓	"	"Hello world"
Comments	✓		// A comment
MultiLine Comments	✓	/* */	/* A comment */
Line Comments	✓	//	// A comment

Less - Stylesheet language

Language features