LESS - Import Options Extend

Description

When a selector is extended, new selector is pulled in at the place of the reference @import statement and only the new selector is marked as not referenced. We can use extend to avoid this redundancy and pull in only specific targeted styles.

Example

The following example demonstrates the use of extend method in the LESS file −

<html>
   <head>
     <link rel = "stylesheet" href = "style.css" type = "text/css" />
     <title>Import Options Extend</title>
   </head>

   <body>
      <h1>Welcome to Tutorialspoint</h1>
      <p class = "para_1">LESS is a CSS pre-processor that enables customizable, manageable and reusable style sheet for web site.</p>
      <p class = "para_2">LESS is a CSS pre-processor that enables customizable, manageable and reusable style sheet for web site.</p>
   </body>
</html>

Now create the style.less file.

style.less

@import (reference)  "http://www.tutorialspoint.com/less/import_options_extend.less";
.para_1 {
   &:extend(.style1);
   background-color: #81F7F3;
}
.para_2 {
   &:extend(.style1);
   background-color: #F6E3CE;
}

The following code will import the import_options_extend.less file into style.less from the https://www.tutorialspoint.com/less/import_options_extend.less path −

import_options_extend.less

.style1 {
   color: #A0A0A0;
   font-family: "Comic Sans MS";
   font-size: 20px;
}

You can compile the style.less 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

.para_1,
.para_2 {
   color: #A0A0A0;
   font-family: "Comic Sans MS";
   font-size: 20px;
}
.para_1 {
   background-color: #81F7F3;
}
.para_2 {
   background-color: #F6E3CE;
}

Output

Follow these steps to see how the above code works −

  • Save the above html code in the import_options_reference_extend.html file.

  • Open this HTML file in a browser, the following output will get displayed.

LESS Import Options Extend
less_import_options.htm
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