For years I have been using the virtually bullet proof method for superscript copy in emails, for eexample
<sup class="sup" style="font-size:7px;line-height:0;vertical-align:4px;" >®</sup>
However, recently in the Gmail iOS app on iOS 10 capture here on EOA, these superscript “®” are now appearing huge, nearly 4 times larger than the copy and rendering in a a shade of blue with no underline.
The shade of blue does not match any hex in the CSS, default hyperlink blue, or default link coloring.
I can’t figure out exactly what is happening here. Anyone come across this before and know how to fix it?
I have attempted replacing the sup tag with a span tag thinking that some style might be being applied to the tag specifically, but that made no difference.