I'm trying to make a form submit button stick to the right hand side of the page when scrolling. (Rather a long form)
I've got it working using the code below, but it clings to the top-middle after scrolling 500px.
I need it to cling to the right after scrolling say 500px.

CSS:

<style>
  .affix {
      top: 20px;
  }
 </style>

then using these data- elements on the <button> tag:

<button type="submit" class="btn btn-primary" data-spy="affix" data-offset-top="500">Update case</button>

Any suggestions?

Hello David,
As Bootstrap 3 documentation explains:

Quote

you must provide CSS for the positioning and width of your affixed content.

Thanks Teodor
This works below:

<style>
.affix {
top: 20px;
right: 10px;
}
</style>

Perhaps you should add this to your BS3 Components extension.

Dave