Chapter 4. Leveraging the Less Built-in Functions
In this chapter, you will learn the following topics:
- Converting units with the 
convert()function - Using the 
default()function - Embedding images with data URIs
 - Formatting strings
 - Replacing a text within a string
 - Working with lists
 - Using mathematical functions
 - Using the 
color()function - Evaluating the type of a value
 - Creating color objects with RGB values
 - Getting information about a color
 - Creating a color variant with the 
darken()andlighten()functions - Creating overlays of two colors with Less