LESS extends CSS with dynamic behavior such as variables, mixins, operations and functions.
How to use ?
Just enqueue the LESS files (with .less extension) as it is usually done for the CSS ones, and the corresponding CSS files will automatically be generated and added to the site.
1.This plugin is based on lessphp by Leaf Corcoran
2.This plugin generates the css file under “/wp-content/uploads/lessify-cache” and therefore you need to define your images and any external links on you less file using the themeurl variable available with this plugin and if you use relative url then it will not work as we are saving the css file in a different location.