Using External CSS
We know sometimes the option you get to change don't give you the freedom you want.
For the people who want to add a little more of a personal touch you can reference your own CSS files to tweak the splash page.
All you need to do is have a .css file hosted somewhere externally, and you can paste a direct link to it within the designer.
If you want to use your own external style sheet on the splash pages, you can do this quite easily by following these steps.