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# Max-height
The `max-height` style sets a maximum height for a widget.
## Syntax
--8<-- "docs/snippets/syntax_block_start.md"
max-height: <a href="../../css_types/scalar"><scalar></a>;
--8<-- "docs/snippets/syntax_block_end.md"
The `max-height` style accepts a [`<scalar>`](../css_types/scalar.md) that defines an upper bound for the [`height`](./height.md) of a widget.
That is, the height of a widget is never allowed to exceed `max-height`.
## Example
The example below shows some placeholders that were defined to span vertically from the top edge of the terminal to the bottom edge.
Then, we set `max-height` individually on each placeholder.
=== "Output"
```{.textual path="docs/examples/styles/max_height.py"}
```
=== "max_height.py"
```py
--8<-- "docs/examples/styles/max_height.py"
```
=== "max_height.tcss"
```css hl_lines="12 16 20 24"
--8<-- "docs/examples/styles/max_height.tcss"
```
1. This won't affect the placeholder because its height is less than the maximum height.
## CSS
```css
/* Set the maximum height to 10 rows */
max-height: 10;
/* Set the maximum height to 25% of the viewport height */
max-height: 25vh;
```
## Python
```python
# Set the maximum height to 10 rows
widget.styles.max_height = 10
# Set the maximum height to 25% of the viewport height
widget.styles.max_height = "25vh"
```
## See also
- [`min-height`](./min_height.md) to set a lower bound on the height of a widget.
- [`height`](./height.md) to set the height of a widget.
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