PODS stripping out some inline CSS in a template?

Any idea why this PODS template:

[pods]
[each achievements]
<span style="display: block; margin-bottom: 0.9rem;">{@_value}</span>
[/each]
[/pods]

Gets rendered as:

<span style="margin-bottom: 0.9rem;">Foo</span>
<span style="margin-bottom: 0.9rem;">Bar</span>

?

Seems to be stripping out display: block; for some reason.