textual/docs/styles/min_height.md

Min-height

The min-height style sets a minimum height for a widget.

Syntax

--8<-- "docs/snippets/syntax_block_start.md" min-height: <scalar>; --8<-- "docs/snippets/syntax_block_end.md"

The min-height style accepts a <scalar> that defines a lower bound for the height of a widget. That is, the height of a widget is never allowed to be under min-height.

Example

The example below shows some placeholders with their height set to 50%. Then, we set min-height individually on each placeholder.

=== "Output"

```{.textual path="docs/examples/styles/min_height.py"}
```

=== "min_height.py"

```py
--8<-- "docs/examples/styles/min_height.py"
```

=== "min_height.tcss"

```css hl_lines="13 17 21 25"
--8<-- "docs/examples/styles/min_height.tcss"
```

1. This won't affect the placeholder because its height is larger than the minimum height.

CSS

/* Set the minimum height to 10 rows */
min-height: 10;

/* Set the minimum height to 25% of the viewport height */
min-height: 25vh;

Python

# Set the minimum height to 10 rows
widget.styles.min_height = 10

# Set the minimum height to 25% of the viewport height
widget.styles.min_height = "25vh"

See also

• max-height to set an upper bound on the height of a widget.
• height to set the height of a widget.