How do I change the background colour of my ‘Button Hyperlink’ Macro on a single page (not a space)

[Lesley Wilson]

Trying to change the colour of my button/s using the ‘Button Hyperlink’ Macro on a confluence page. 

Please note I only want to change these for a certain page (not an entire space) 

Do I enter in as follows or am I missing something?

ID: id="background".

Class: .contentf.aui-button {background: #D1A0A0};