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Button Implementation

The sbb-button component provides the same functionality as a native <button> enhanced with the SBB Design.

<sbb-button>Button text</sbb-button>


The button text is provided via an unnamed slot; the component can optionally display a sbb-icon
at the component start using the iconName property or via custom content using the icon slot.
At least one is mandatory, so you can have a sbb-button with icon only, text only, or with both.

<sbb-button icon-name="info"> Button text </sbb-button>

  <sbb-icon slot="icon" name="info"></sbb-icon>
  Button text

<sbb-button icon-name="info" aria-label="Click for more information."></sbb-button>

Link / button properties

The component can be internally rendered as a button or as a link,
depending on the value of the href property, so the associated properties are available
(href, target, rel and download for link; type, name, value and form for button).

If isStatic is set, the component will be rendered as a button without any user interaction.
The isStatic is only considered during initial rendering (connectedCallback), later configuration changes are ignored.
Please note that if the sbb-button is placed inside another anchor or button tag,
it is internally rendered as a span in order to not break HTML functionality.
If the component is placed inside an sbb-form-field, it renders with the correct styling.

<sbb-button href="https://github.com/lyne-design-system/lyne-components" target="_blank">
  Go to site

<sbb-button type="button" name="tickets" form="buy" value="tickets"> Buy tickets </sbb-button>


The component has four color variants that can be set using the variant property (default: primary),
and it has also a negative one which can be set using the negative property.

There are two different sizes (m and l, which is the default) that can be set using the size property.

The component can be displayed in disabled state using the self-named property.

<sbb-button variant="secondary">Button</sbb-button>
<sbb-button variant="tertiary">Button</sbb-button>
<sbb-button variant="transparent">Button</sbb-button>

<sbb-button size="m">Button</sbb-button>

<sbb-button disabled>Button</sbb-button>

Focus outline

Please make sure that the focus outline appears in the correct color if the component is used on a dark background.
You can set it by re-defining the css var on sbb-button or any parent element:

sbb-button {
  --sbb-focus-outline-color: var(--sbb-focus-outline-color-dark);


Use the accessibility properties in case of an icon-only button to describe the purpose of the sbb-button for screen-reader users.


Name Attribute Privacy Type Default Description
variant variant public | 'primary' | 'secondary' | 'tertiary' | 'transparent' 'primary' Variant of the button, like primary, secondary etc.
negative negative public boolean false Negative coloring variant flag.
size size public SbbButtonSize 'l' Size variant, either l or m.
isStatic is-static public boolean false Set this property to true if you want only a visual representation of a button, but no interaction (a span instead of a link/button will be rendered).
iconName icon-name public string | undefined The icon name we want to use, choose from the small icon variants from the ui-icons category from here https://icons.app.sbb.ch.
href href public string | undefined The href value you want to link to (if it is present, button becomes a link).
target target public LinkTargetType | string | undefined Where to display the linked URL.
rel rel public string | undefined The relationship of the linked URL as space-separated link types.
download download public boolean | undefined Whether the browser will show the download dialog on click.
type type public ButtonType | undefined The type attribute to use for the button.
disabled disabled public boolean false Whether the button is disabled.
name name public string | undefined The name attribute to use for the button.
value value public string | undefined The value attribute to use for the button.
form form public string | undefined The
element to associate the button with.


Name Description
Use the unnamed slot to add content to the button.
icon Slot used to display the icon, if one is set
Varianten Primary Secondary Tertiary Transparent Grössen M L Icon Ja Nein Label Ja Nein Negativ Nein Ja Hintergrund White Milk Iron Charcoal Black
Beispiele Primary
Primary Negative
Secondary Negative
Tertiary Negative
Transparent Negative
Icon Only
Primary Disabled
Secondary Disabled
Tertiary Disabled
Transparent Disabled
Primary Negative Disabled
Secondary Negative Disabled
Tertiary Negative Disabled
Transparent Negative Disabled
Icon Only Disabled
No Icon
Size M
Fixed Width
With Slotted Icon
Link Opens In New Window
Request Submit
Loading Indicator
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