Upload Button The button classes can also be used on a file input.
Important Notes: This is an advanced use case and the Twig template does not support this. Hierarchy should be set to tertiary. Size should be set to small.
Demo
Twig
Not available in Twig. Please use plain HTML.
HTML
<input id="unique-file-id" type="file" class="e-bolt-button e-bolt-button--small e-bolt-button--tertiary">