LESS - Extend Attached to the Selector

Description

Extend is connected to a selector which looks similar to a pseudo class with selector as parameter. When the ruleset has many selectors then keyword extend can be applied on any of the selectors. The following format can be used to define the extend in code.

Extend after the selector [Eg: pre:hover:extend(div pre)]
Allows space between selector and extend [Eg: pre:hover :extend(div pre)]
Allows multiple extends [Eg: pre:hover:extend(div pre):extend(.bucket tr) or pre:hover:extend(div pre, .bucket tr)]
Extend must be defined at the end of the selector. pre:hover:extend(div pre).nth-child(odd) type is not allowed.

Example

The following example demonstrates the use of extend attached to selector in the LESS file −

extend_syntax.htm

<!doctype html>
   <head>
      <link rel = "stylesheet" href = "style.css" type = "text/css" />
   </head>

   <body>
      <div class = "style">
         <h2>Welcome to TutorialsPoint</h2>
         <div class = "container">
            <p>Hello!!!!!</p>
         </div>
      </div>
   </body>
</html>

Next, create the style.less file.

style.less

.style,
.container{
   background: #BF70A5;
}

.img,
.container{
   font-size: 45px;
   font-style: italic;
}

You can compile the style.less file to style.css by using the following command −

lessc style.less style.css

Execute the above command; it will create the style.css file automatically with the following code −

style.css

.style {
   background: #BF70A5;
}

.container,
.style {
   font-style: italic;
}

.img,
.style {
   font-size: 45px;
}

Output

Follow these steps to see how the above code works −

Save the above html code in the extend_syntax.htm file.
Open this HTML file in a browser, the following output will get displayed.

less_extend.htm