This is the content for the first section. It will be hidden by default and revealed when the heading is clicked.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Here is some different content for the second section.
This is the content for the third expandable section. You can put any HTML content you want inside the .details div.
Feel free to experiment with different types of content.