<!-- Sidenav -->

<nav

  id="sidenav-1"

  class="sidenav"

     data-mdb-mode="side"

  data-mdb-backdrop="false"

  data-mdb-hidden="true"

     data-mdb-content="#content"

>

  <ul class="sidenav-menu">

    <li class="sidenav-item">

      <div class="input-group flex-nowrap">

    <span class="input-group-text" id="addon-wrapping">@</span>

    <input type="text" class="form-control" placeholder="Username" aria-label="Username" aria-describedby="addon-wrapping" />

  </div>

    </li>

    <li class="sidenav-item">

      <a class="sidenav-link">

        <i class="far fa-smile fa-fw me-3"></i><span>Link 1</span></a

      >

    </li>

    <li class="sidenav-item">

      <a class="sidenav-link"

        ><i class="fas fa-grin fa-fw me-3"></i><span>Category 1</span></a

      >

      <ul class="sidenav-collapse show">

        <li class="sidenav-item">

          <a class="sidenav-link">Link 2</a>

        </li>

        <li class="sidenav-item">

          <a class="sidenav-link">Link 3</a>

        </li>

      </ul>

    </li>

    <li class="sidenav-item">

      <a class="sidenav-link"

        ><i class="fas fa-grin-wink fa-fw me-3"></i><span>Category 2</span></a

      >

      <ul class="sidenav-collapse">

        <li class="sidenav-item">

          <a class="sidenav-link">Link 4</a>

        </li>

        <li class="sidenav-item">

          <a class="sidenav-link"

            >Link 5</a

          >

        </li>

      </ul>

    </li>

  </ul>

</nav>

<!-- Sidenav -->

<div id="content">

<!-- Toggler -->

<button

  data-mdb-toggle="sidenav"

  data-mdb-target="#sidenav-1"

  class="btn btn-primary"

  aria-controls="#sidenav-1"

  aria-haspopup="true"

>

  <i class="fas fa-bars"></i>

</button>

<!-- Toggler -->

​

<div class="input-group flex-nowrap">

  <span class="input-group-text" id="addon-wrapping">@</span>

  <input type="text" class="form-control" placeholder="Username" aria-label="Username" aria-describedby="addon-wrapping" />

</div>

  </div>