length-zero-no-unit
Disallow units for zero lengths.
a { top: 0px; }
/** ↑↑
* This zero and this type of length unit */Lengths refer to distance measurements. A length is a
dimension, which is a number immediately followed by a
unit identifier. However, for zero lengths the unit identifier
is optional. The length units are: em, ex,
ch, vw, vh, cm,
mm, in, pt, pc,
px, rem, vmin, and
vmax.
This rule ignores lengths within math functions
(e.g. calc) in favor of the function-calc-no-invalid
rule.
The fix
option can automatically fix all of the problems reported by this
rule.
Options
true
The following patterns are considered violations:
a { top: 0px }a { top: 0.000em }The following patterns are not considered violations:
a { top: 0 } /* no unit */a { transition-delay: 0s; } /* dimension */a { top: 2in; }a { top: 1.001vh }Optional secondary options
ignore: ["custom-properties"]
"custom-properties"
Ignore units for zero length in custom properties.
The following pattern is not considered a violation:
a { --x: 0px; }