We insert automatic anchors for the different sections of the game pages, for rewards you can use: https://sharkbombs.itch.io/nowhere-prophet#rewards
You can look for this in the source of the page for anything that has an id attribute.
If you want to create your own anchors, we currently strip the id attribute from tags, but you can use an a tag with the name attribute to create a named anchor.
<a name="my_anchor"></a>