TSI

Example of using ToggleShowingItems:

<div tsi-items-list-wrapper>
  <h3>...Title...</h3>
  <div tsi-items-list-block 
    data-tsi-items-selector=".center-content > .item" 
    data-tsi-number-of-collapsed-items="2"
    >
      <div class="center-content">
          <div class="item">...Content</div>
          ...Items
      <div>
  </div>
  <a href="javascript:void(0)" 
    tsi-toggle-button 
    data-tsi-expand-text="Полный перечень услуг"
    data-tsi-collapse-text="Свернуть список"
    >Полный перечень услуг</a>
</div>

Example of using Accordeon:

<div id="faq" tsi-accordeon>
    <div data-tsi-toggle="collapse" data-tsi-target=`.faq-1`>
        Who is me?
    </div>
    <div class="faq-1" >
        <div class="collapse-body">
            I'm human!
        </div>
    </div>
</div>