default value for 0

[Krknv]

le0px -> left: 0;
le0em -> left: 0;
le0 -> left: 0;
etc.

но хотелось бы:

le0px -> left: 0px;
le0em -> left: 0em;
le0 -> left: 0px;
etc.

[lunelson]

Afaik 0 doesn't usually need units, and for this reason most css-minifiers strip out the units on 0 values anyway unless it is a percentage. There are a few CSS bugs (with flexbox for example) where some browsers need a unit on the 0, and in these cases you have to use 0% to avoid the minifier removing it

[Krknv]

Now, chrome have ability to inc/dec values by up/down arrows, and maybe that feature isn't necessary