Buttons are simple, atom-level components — we consider them to be one of the most important interactive elements on the mobile UI. This is because they are one of the first interactive elements that a user will be visually drawn to when faced with a new screen.
TWIG : Universes/_common/_twig/_components/_buttons/_buttons.twig
CSS : DesignSystem/_tactics/_common/_css/_components/_button/_button.scss
DesignSystem/_tactics/_common/_css/_components/_button/_ghost/_ghost.scss
JS : Universes/_common/_js/_buttons/_*.js
For the moment, the CSS class 'is-default' is mandatory, but in the future, it will be removed. It is used for manage the multi-chromatic icons cases.