A family of Microsoft word processing software products for creating web, email, and print documents.
Hi Thom
I am an independent advisor and believe I can help with regards to your question.
Word Online does not come with all the features of the full version, but they are constantly improving the product, although it will take time.
This is the way that I would do it, and I admit it is not perfect, but it works for me.
If you can create a file in the full version of Word then save to OneDrive with your styles. You can then open that file up and do a save as with Word Online. This would take most of the Styles across into the Word Online Interface.
Just for your information, there is a site https://word.uservoice.com/ where you can suggest improvements and/or enhancements to Word, Microsoft do keep this updated with items that will appear in the future.
Please let me know if you have any queries or questions.
Kind Regards