Hi Paul,

We would recommend you to use LESS in T3.

If you are not familiar with LESS, then you can use CSS.
Just create a new theme folder then compiless LESS to CSS and you can modify css in your new theme at: /css/themes/[your new theme]

After create css in your theme, please DO NOT click on the compile button anymore. or else, your changes will be overwritten.

And you can use custom.css if you want.

Regards

Thank you for your reply.

LESS is very similar to CSS.

What LESS files would i edit should i choose this route?

Hi paul,

when you have made a theme
you will found your own file with variables custom.less and variables.less

you can make changes in the variables.less file

regards

Gerhard