updates

.accordion {
  margin: 3em auto;
  max-width: 30em;
}

.toggle {
  display: none;
}

.option {
  position: relative;
  margin-bottom: 1em;
}

.titles,
.content {
  backface-visibility: hidden;
  transform: translateZ(0);
  transition: all 0.2s;
}

.titles {
  background: #fff;
  padding: 1em;
  display: block;
  color: #7A7572;
  font-weight: bold;
}

.titles:after, .titles:before {
  content: "";
  position: absolute;
  right: 1.25em;
  top: 1.25em;
  width: 2px;
  height: 0.75em;
  background-color: #7A7572;
  transition: all 0.2s;
}

.titles:after {
  transform: rotate(90deg);
}

.content {
  max-height: 0;
  overflow: hidden;
  background-color: #fff;
}
.content p {
  margin: 0;
  padding: 0.5em 1em 1em;
  font-size: 0.9em;
  line-height: 1.5;
}

.toggle:checked + .titles, .toggle:checked + .titles + .content {
  box-shadow: 3px 3px 6px #ddd, -3px 3px 6px #ddd;
}
.toggle:checked + .titles + .content {
  max-height: 500px;
}
.toggle:checked + .titles:before {
  transform: rotate(90deg) !important;
}








<div class="accordion">

    <div class="option">
      <input type="checkbox" id="toggle1" class="toggle" />
      <label class="titles" for="toggle1">description
      </label>
      <div class="content">
        <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. </p>
      </div>
    </div>

    <div class="option">
      <input type="checkbox" id="toggle2" class="toggle" />
      <label class="titles" for="toggle2">
        links
      </label>
      <div class="content">
        <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. </p>
      </div>
    </div>

    <div class="option">
      <input type="checkbox" id="toggle3" class="toggle" />
      <label class="titles" for="toggle3">
        updates
      </label>
      <div class="content">
        <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. </p>
      </div>
    </div>

  </div>