JSFiddle - React, Tailwind, and code Playground

by iBertel

HTML

<nav class="side-navigation">
  <div class="navigation-container">
    <h3>Main level</h3>
    <ul>
      <li class="w-sub">
        <span>Menu 1</span>
        <ul>
          <li>
            <span>Sub menu 1</span>
          </li>
          <li>
            <span>Sub menu 2</span>
          </li>
        </ul>
      </li>
      <li class="w-sub">
        <span>Menu 2</span>
        <ul>
          <li class="w-sub">
            <span>Sub menu 1</span>
            <ul>
              <li>
                <span>Sub sub menu 1</span>
              </li>
              <li>
                <span>Sub sub menu 2</span>
              </li>
            </ul>
          </li>
          <li class="w-sub">
            <span>Sub menu 2</span>
            <ul>
              <li>
                <span>Sub sub menu 1</span>
              </li>
              <li>
                <span>Sub sub menu 2</span>
              </li>
            </ul>
          </li>
          <li>
            <span>Sub menu 3</span>
          </li>
          <li>
            <span>Sub menu 4</span>
          </li>
        </ul>
      </li>
      <li>
        <span>Menu 3</span>
      </li>
    </ul>
  </div>
</nav>

SCSS

body {
  font-family: sans-serif;
}

nav.side-navigation {
  width: 300px;
  height: 100%;
  position: fixed;
  background-color: #336ca6;
  color: #fff;
}

.navigation-container {
  h3 {
    font-size: 20px;
    padding: 10px 20px;
  }
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
  background-color: #336ca6;
  position: relative;
  li {
    overflow: hidden;
    //box-shadow: inset 0 1px rgba(0, 0, 0, 0.1);
    //border-bottom:1px solid rgba(0,0,0,0.1);      
    overflow: hidden;
    span {
      display: block;
      padding: 10px 20px;
      cursor: pointer;
      color: #333;
    }
    &.w-sub {
      height: 38px;
      &.active {
        height: auto;
      }
    }
    ul {
      background: rgba(0, 0, 0, 0.1);
    }
  }
}


}

JavaScript

$('.w-sub > span').on('click', function() {
  $(this).parent('li').toggleClass('active').siblings().removeClass('active');
});