Changes
use border-radius css directly
<includeonly><span style="margin-right: 0.1em; padding: 3px 4px 2px; background-color: {{{bc|yellow}}}; border: 1px; border-radius:3px; box-shadow: 0.1em 0.1em 0.25em rgba(0,0,0,0.75); {{box-shadow|2px|2px|4px|#A0A080}};">{{{1|Highlighted text}}}</span></includeonly><noinclude>{{documentation}}</noinclude>