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line-height-step

The line-height-step CSS property sets the step unit for line box heights. When the property is set, line box heights are rounded up to the closest multiple of the unit.

Syntax​

/* Point values */
line-height-step: 18pt;

/* Global values */
line-height-step: inherit;
line-height-step: initial;
line-height-step: revert;
line-height-step: revert-layer;
line-height-step: unset;

The line-height-step property is specified as any one of the following:

  • a <length>.

Values​

  • <length>
    • : The specified {{cssxref("<length>")}} is used in the calculation of the line box height step.

Formal definition​

Formal syntax​

Examples​

Setting step unit for line box height​

In the following example, the height of line box in each paragraph is rounded up to the step unit. The line box in <h1> does not fit into one step unit and thus occupies two, but it is still centered within the two step unit.

:root {
  font-size: 12pt;
  --my-grid: 18pt;
  line-height-step: var(--my-grid);
}
h1 {
  font-size: 20pt;
  margin-top: calc(2 * var(--my-grid));
}

The result of these rules is shown below in the following screenshot:

How the line-height-step property affects the appearance of text.

Specifications​

Browser compatibility​

See also​

  • {{Cssxref("font")}}
  • {{Cssxref("font-size")}}
  • {{Cssxref("line-height")}}