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HTML 

              
                <h1>jQuery Accordions</h1>

<div class="accordion">
  <h4 class="accordion__title">
    Accordion Title 01
    <i class="accordion__icon">
      <div class="line-01"></div>
      <div class="line-02"></div>
    </i>
  </h4><!-- end .accordion__title -->
  <div class="accordion__content">
    <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Donec odio.</p>
    <p>Quisque volutpat mattis eros. Nullam malesuada erat ut turpis. Suspendisse urna nibh, viverra non, semper
      suscipit, posuere a, pede.</p>
  </div><!-- end .accordion__content -->
</div><!-- end .accordion 01 -->

<div class="accordion">
  <h4 class="accordion__title">
    Accordion Title 02
    <i class="accordion__icon">
      <div class="line-01"></div>
      <div class="line-02"></div>
    </i>
  </h4><!-- end .accordion__title -->
  <div class="accordion__content">
    <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Donec odio.</p>
    <p>Quisque volutpat mattis eros. Nullam malesuada erat ut turpis. Suspendisse urna nibh, viverra non, semper
      suscipit, posuere a, pede.</p>
  </div><!-- end .accordion__content -->
</div><!-- end .accordion 02 -->

<div class="accordion">
  <h4 class="accordion__title">
    Accordion Title 03
    <i class="accordion__icon">
      <div class="line-01"></div>
      <div class="line-02"></div>
    </i>
  </h4><!-- end .accordion__title -->
  <div class="accordion__content">
    <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Donec odio.</p>
    <p>Quisque volutpat mattis eros. Nullam malesuada erat ut turpis. Suspendisse urna nibh, viverra non, semper
      suscipit, posuere a, pede.</p>
  </div><!-- end .accordion__content -->
</div><!-- end .accordion 03 -->

<div class="accordion">
  <h4 class="accordion__title">
    Accordion Title 04
    <i class="accordion__icon">
      <div class="line-01"></div>
      <div class="line-02"></div>
    </i>
  </h4><!-- end .accordion__title -->
  <div class="accordion__content">
    <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Donec odio.</p>
    <p>Quisque volutpat mattis eros. Nullam malesuada erat ut turpis. Suspendisse urna nibh, viverra non, semper
      suscipit, posuere a, pede.</p>
  </div><!-- end .accordion__content -->
</div><!-- end .accordion 04 -->
!

CSS 

              
                /**
 * Required CSS 
 */
.accordion__title {
  cursor: pointer;
  margin: 0;
  position: relative;
}

.accordion__icon {
  position: absolute;
  top: 50%;
  right: 24px;
  transform: translateY(-50%);
}

.accordion__icon .line-01,
.accordion__icon .line-02 {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 2px;
  background-color: #272343;
  transition: 0.3s;
}

.accordion__icon .line-02 {
  transform: rotate(90deg);
}

.accordion__content {
  display: none;
}

.accordion--open .line-02 {
  transform: rotate(0deg);
}
/* end Required CSS */

/**
 * Now let's make it look pretty! 
 */
body {
  font-family: "Rubik", sans-serif;
  max-width: 768px;
  margin: 0 auto;
  padding: 40px 5%;
  color: #111;
  overflow-y: scroll;
}

h1 {
  text-align: center;
  margin: 0 0 40px;
}

.accordion {
  margin-top: -1px;
  border-top: 1px solid #272343;
  border-bottom: 1px solid #272343;
}

.accordion__title {
  padding: 20px 16px;
  font-size: 16px;
  transition: 0.2s;
}

.accordion__content {
  padding: 24px 16px 16px;
}

.accordion__content p {
  margin: 0 0 16px;
}

.accordion__title:hover {
  background-color: #433d6f;
  color: #fff;
}

.accordion__title:hover .line-01,
.accordion__title:hover .line-02 {
  background-color: #fff;
}

.accordion--open .accordion__title {
  background-color: #272343;
  color: #fff;
}

.accordion--open .line-01,
.accordion--open .line-02 {
  background-color: #fff;
}
!

JS 

              
                // When any accordion title is clicked...
$(".accordion__title").click(function() {
  const $accordion_wrapper = $(this).parent();
  const $accordion_content = $(this).parent().find(".accordion__content");
  const $accordion_open = "accordion--open";

  // If this accordion is already open
  if ($accordion_wrapper.hasClass($accordion_open)) {
    $accordion_content.slideUp();                     // Close the content.
    $accordion_wrapper.removeClass($accordion_open);  // Remove the accordionm--open class.
  }
  // If this accordion is not already open
  else {
    $accordion_content.slideDown();                 // Show this accordion's content.
    $accordion_wrapper.addClass($accordion_open);   // Add the accordion--open class.
  }
});
!
999px

Console