awebdev Can you please advise how I would add custom CSS styles / overides to a Shape5 template.
You can simply add your css rule-set which consists of a selector and a declaration block to specific custom.css file and the specific css rule-set should reflect for certain element however clearing browser cache may be required at times in order for changes to reflect
Ref: Guide to know more about css syntax and selectors
Also, It may required to add !important at the end of css declaration like the example below in order to supersede the existing css
body{background:#ccc !important;}
Finding custom.css or you may create a new file with similar name (if it doesnt exist) ::
Shape 5 templates ship with an empty custom.css file in the /css/ subdirectory of your template. Simply add your styles to this file and they will be included in your layout.