Thank you for your reply.
This is the old website where the code is being used its version 7.0 - https://www.precure.dk/about-us
When I copy this code into 7.1 it doesn't do anything.
<input type="checkbox" class="read-more-state" id="Mission" />
<h3><center>Mission</center></h3><p>At PRECURE, we are developing smart wearable IoT devices, which analyse muscular activity and provide biofeedback using machine learning.</p>
The user will change behaviour, hence experience less pain, recover faster, and avoid further injuries. This has a positive impact to people´s quality of life, adds cost and time efficiencies to companies, and it enables more effective and efficient treatment. Lastly it will be a huge benefit for society.
<label for="Mission" class="read-more-trigger"></label>