Text container's rounded corners included "lines" on certain browsers

[Marcel Cutts]

Issue

When viewing Proverbica on FF (v26) the rounded corners of the text container include a hard stroke "line" within the feathered outer edges.

This issue does not occur in Chrome 31.

Suggested actions

Tinker with CSS utilised in order to find a combination of statements that works in the two key web engines. This may likely require trial and error as CSS is a fickle beast.