osmos/osmos-custom-elements/osCollapse/osCollapse.html

OSMOS - Symbiosys

<template>
  <a href click.delegate="osCollapse(targetId)">
    <slot name="to"></slot>
  </a>
  <div class="os-collapse" class.bind="accordion ? accordion : ''" id="${targetId}">
    <slot name="target"></slot>
  </div>
</template>