CSS first-line pseudo-element

Allows styling specifically for the first line of text using the `::first-line` pseudo-element. Note that only a limited set of properties can be applied.

display: run-in

If the run-in box contains a block box, same as block. If a block box follows the run-in box, the run-in box becomes the first inline box of the block box. If an inline box follows, the run-in box becomes a block box.

css property: align-content: supported in flex layout: `first baseline`

css property: align-items: supported in flex layout: `first baseline`

css property: align-self: supported in flex layout: `first baseline`

css property: baseline-source: first

css selector: `::first-line`: support on svg `<text>` element