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.

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

Syntax

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

• a <length>.

Values

<length>

The specified <length> is used in the calculation of the line box height step.

Formal syntax

<length>

Examples

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:

Specifications

Browser compatibility

See also

• font
• font-size
• line-height