On each page you have access to the CSS, please note that general CSS will be used for the whole registration site, for all participant pages. So if you make a text color change, it will be in the whole site.
Go to the page you want to change something via the page editor -> in this example Personal data page -> Page style editor -> Custom CSS
The 'Preview' option, allows you to see your style adjustment before you save your settings. This option will also automatically check your custom CSS for any errors and report these back to you.
Please do take into consideration that these errors are technical in nature, and so they might not be understandable to someone who does not know CSS all that well.
In the example below, the CSS code is specific for 1 item and makes the lines between the p-events red.
Changes made directly in the CSS code must be very precise. Before you start, please make a copy of the settings you have already entered by selecting all the text on the screen and then copying and pasting it, for example into a notepad file.