LESS It's a subject CSS Preprocessing Language , It expands CSS language , Added variables such as , blend （mixin）, Functions and other functions , let CSS Easier to maintain , Easy to create themes , expansion .LESS It allows us to do more with less code .LESS With CSS Grammar based , And borrowed many of the features of programming languages that we are familiar with , For developers, the learning cost can be almost negligible , With the help of LESS We can proceed more conveniently Web develop .
however less There are also some of his shortcomings ：less Need to compile . Whether placed on the client or server side , It's all an additional expense .
Using this tool , You don't need to install Less The development environment allows for online integration Less convert to Css file .