This is Squarespace text above the HR (below the line is injected from

Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor. Donec sed odio dui. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Integer posuere erat a ante venenatis dapibus posuere velit aliquet. Nulla vitae elit libero, a pharetra augue. Nulla vitae elit libero, a pharetra augue. 

(Back on Squarespace now)

Something strange is happening in the text-styling. Only a few words above are being styled by the target page’s CSS. 

Some original content doesn't have the inline styling. *shrugs* 

The inline styling comes and goes when editing the Google Doc.
The 18pt line above lost its styling when adding strikethrough text.