How TO Make A Beautiful- Collapsibles /Accordion

<button class="accordion">Section 1</button>

<div class="panel">

  <p>Lorem ipsum...</p>

</div>

<button class="accordion">Section 2</button>

<div class="panel">

  <p>Lorem ipsum...</p>

</div>

<button class="accordion">Section 3</button>

<div class="panel">

  <p>Lorem ipsum...</p>

</div>

/* Style the buttons that are used to open and close the accordion panel */

.accordion {

  background-color: #eee;

  color: #444;

  cursor: pointer;

  padding: 18px;

  width: 100%;

  text-align: left;

  border: none;

  outline: none;

  transition: 0.4s;

}

/* Add a background color to the button if it is clicked on (add the .active class with JS), and when you move the mouse over it (hover) */

.active, .accordion:hover {

  background-color: #ccc;

}

/* Style the accordion panel. Note: hidden by default */

.panel {

  padding: 0 18px;

  background-color: white;

  display: none;

  overflow: hidden;

}

var acc = document.getElementsByClassName("accordion");

var i;

for (i = 0; i < acc.length; i++) {

  acc[i].addEventListener("click", function() {

    /* Toggle between adding and removing the "active" class,

    to highlight the button that controls the panel */

    this.classList.toggle("active");

    /* Toggle between hiding and showing the active panel */

    var panel = this.nextElementSibling;

    if (panel.style.display === "block") {

      panel.style.display = "none";

    } else {

      panel.style.display = "block";

    }

  });

}