[Help] Print Format Missing Table Borders and Resetting CSS Design

Hi guys, I want to ask a question regarding print format.

So I have an issue that some of the borders in my table is not displaying. I don’t what’s the cause.
And everytime I tried to print my document, the CSS design is reset.
Can anyone help me?

Missing Borders:

CSS resetting my design:

This should be in Bold.

Thank you.