How to style a link?

Hi,

Am new to Ghost and really struggling to create usable links in posts. I think it’s related to the theme I have chosen (guidepost) but there is no styling associated with a hyperlink i.e no underline, no colour on the anchor text etc UNLESS you hover over the text then an underline appears e.g https://d.pr/i/7iDOrc.

Markdown does not have an option to underline the anchor text or to change font colour to make the text look like a link.

Any ideas/help appreciated.

Best,

Andy