CSSplus is an implementation of CSS that accept variables to not duplicate code in development code.
You can use all the CSS 2, CSS 3 properties without any restriction.
Variables:
To put the content of a rule in other rules we only need to put the name of the rule inside two keys.
In this way:
.block_display
{
display:block;
}
.include_block_display
{
[.block_display]
/* Other variables or styles */
}
(or press ESC or click the overlay)