text-align:justify Last-Line Behavior
Supported text-align-last behavior under explicitly justified main text, not bidi-order or actual space distribution. Explicit supplied computed/layout context only; not a browser cascade/layout engine or cross-browser guarantee.
Description
Last-line alignment can differ from the justification of preceding lines.
Last-line alignment can differ from the justification of preceding lines.1
Logical start and end also depend on the element's writing and direction context. Use text-align:justify Last-Line Behavior to look up a supported term.
When to use text-align:justify Last-Line Behavior
Use text-align:justify Last-Line Behavior to look up a supported term. Choose the exact supported token from the table; preserve its punctuation and capitalization.
How to use text-align:justify Last-Line Behavior and understand its results
- Choose the exact supported token from the table; preserve its punctuation and capitalization.
- Enter Last line policy using the field table and validation rules below, then run the tool.
- Read Meaning and interpret units, signs, ordering and placeholders as explained below.
- If the tool reports an input error, correct that field and rerun. A successful false result, empty match list or unknown-evidence placeholder has the specific meaning described here; check the limitations before applying the result.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| lastLinePolicy | Last line policy | string | Required; constraints below |
Enter one of the exact supported lastLinePolicy tokens in the table below. The implementation performs a case-sensitive lookup and returns the stored meaning without interpreting a stylesheet, audio recording or performance. Unsupported tokens, added whitespace and alternate capitalization are input errors. The entries describe a bounded vocabulary rather than every valid value in the wider topic.
meaning = storedTable[exactSupportedToken] Field order, units and branch conditions follow the implementation explanation above.
| Exact supported token | Stored meaning |
|---|---|
| auto | last line uses start alignment under text-align:justify |
| justify | last line is eligible for justification |
| start | last line aligned to logical start |
| center | last line centered |
| end | last line aligned to logical end |
| Output field | Meaning | Value type |
|---|---|---|
| meaning | Stored explanation for the exact supported token. | string |
{
"input": {
"lastLinePolicy": "auto"
},
"output": {
"meaning": "last line uses start alignment under text-align:justify"
}
}Limitations and assumptions
Logical start and end also depend on the element's writing and direction context. Apply the exact scope and assumptions described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse arrays fail validation. Domain-specific bounds, alignments and supported tokens are stated above; extremely large inputs or outputs can also be rejected. These errors differ from successful results such as false, no matches or unknown evidence.
Alternative or Complementary methods
Use white-space Collapse Behavior Table for a related task: White-space handling controls collapsing, preserved breaks and wrapping.
Use RTL Logical Layout Flip Check for a related task: A horizontal-writing RTL comparison can swap the expected physical left and right margins.
References
-
text-align:justify Last-Line Behavior — tool.io
Similar or alternative tools
- white-space Collapse Behavior Table
White-space handling controls collapsing, preserved breaks and wrapping.
- RTL Logical Layout Flip Check
A horizontal-writing RTL comparison can swap the expected physical left and right margins.