In the QEng task editor, you can use HTML markup to format text and insert media files. The engine is built on Bootstrap, so all standard Bootstrap styling classes are available for layout.
To make an image automatically scale down for mobile devices and laptops:
<img src="image_url" class="img-fluid">
<img src="image_url" class="mx-auto d-block">
<img src="image_url" class="rounded mx-auto d-block">
To add audio to a level:
<audio controls><source src="link_to_uploaded_file" /></audio>
To ensure videos (e.g. from YouTube) scale correctly on both computers and mobile screens, wrap the <iframe> code in a responsive container:
<div class="embed-responsive embed-responsive-16by9"> <iframe src="video_url" class="embed-responsive-item" allowfullscreen></iframe> </div>
To make tables scrollable horizontally on narrow smartphone screens (instead of being squished):
<div class="table-responsive">
<table class="table">
<thead>
<tr><th>Header 1</th><th>Header 2</th></tr>
</thead>
<tbody>
<tr><td>Value 1</td><td>Value 2</td></tr>
</tbody>
</table>
</div>