Test add HTML and CSS and JS

/* 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;
}
Section 1

Section 2

Section 3

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"; } }); }