> Markdown version of [Shape](https://vaadin.com/docs/v24/styling/lumo/lumo-style-properties/shape). Section index: [llms.txt](https://vaadin.com/docs/v24/styling/llms.txt)

# Lumo Shapes

This page lists Lumo shapes-related style properties, which you can use to adjust the visual style of component shapes.

Lumo defines several border radius values. These values are defined as `em` by default, so they scale with the font size.

| Description                                                                                                 | CSS Custom Property    |
| ----------------------------------------------------------------------------------------------------------- | ---------------------- |
| **Large** Dialogs, cards, and other larger container elements.                                              | --lumo-border-radius-l |
| **Medium** Buttons and input fields, and most other normal-sized UI elements.                               | --lumo-border-radius-m |
| **Small** Checkboxes and other small elements that could turn into circles with an excessive border radius. | --lumo-border-radius-s |

> **Caution:** The `--lumo-border-radius` property is deprecated. Use the `--lumo-border-radius-m` property, instead.

> **Important:** If you set one of the border radius property values to zero, always use an explicit unit, for example, `--lumo-border-radius-m: 0px;`. If you use `0` without a unit, it causes some CSS `calc()` operations to be invalid.

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