<button href="http://testlenke.no" class="btn btn--rounded">Tag button</button>
<{{ element }} {{ attr }} href="{{ href }}" class="btn {{ class }}">{{ text }}</{{ element }}>
{
"element": "button",
"text": "Tag button",
"href": "http://testlenke.no",
"template": "element-button",
"class": "btn--rounded"
}
.btn class can be applied to <a>, <button> and <inpu type="button"> elements.