<div class="card">
  <header class="card-header"><p class="card-header-title">Animated Card</p></header>
  <div class="card-content">
    <div class="content">
      <p>Closed by default use <code>nwbAnimatedCardClosed</code> attribute</p>
      <nwb-doc-preview [content]="sample1">
        <div nwbAnimatedCardClosed class="card">
          <header class="card-header">
            <p class="card-header-title">Click me !</p>
            <a class="card-header-icon">
              <span class="icon"> <i class=