Apply a negative value with a minus sign after the colon, which toggles the sign.
View as MarkdownWith Margin utilities
Every margin utility takes a negative value, to overlap elements.
<div className="zi:10 …">A</div>
<div className="ml:-4 zi:20 …">B</div>
<div className="ml:-4 zi:30 …">C</div>
With Positioning utilities
t:, r:, b:, l: & i: take a negative value, to place an element outside its parent.
<div className="p:r …">
<div className="p:a t:-4 l:-4 …"></div>
</div>
With Z-Index utilities
Negative z-index values allow you to place elements behind their siblings or parents. Use zi:-(value) to target negative stack levels.
<div className="p:r …">
<div className="p:a zi:-10 …"></div>
<span>Background Layer</span>
</div>
Changing the polarity
The minus sign reverses the polarity of a utility's value. This is important for utilities whose value is already negative like Letter Spacing.
Letter Spacing
ls:1 & ls:2 are already negative, so ls:-1 & ls:-2 flip them to wider spacing.
<p className="ls:1 …">Standard (Tight)</p>
<p className="ls:-1 …">Negated (Wide)</p>