You’ve reported many issues on this forum in various threads that are all related to the same thing: HTML.
You really need to hire someone to help you with your HTML. Several of us have tried to help you with little requests now and then, but you keep coming back with very complex requests for custom HTML coding. This forum is meant to be about Manager. Manager happens to accept HTML in several places to enhance its default layout, but that’s advanced stuff. Some of the things you have wanted to do (like position the signature box on your invoices just precisely so) are complicated – or even impossible – to do in HTML. Clearly from the screenshot you’ve posted above, you’ve totally messed things up in trying to implement a custom invoice template.
You seriously need to get help. Find an HTML expert to do your layout for you. That expert may or may not be able to give you precisely what you want, given the limitations of the platform, but he or she should be able to get you closer than you’re going to get on your own.
You might get somewhere on the kindness of your fellow forum users here, but I for one am exhausted from your HTML questions already (and when I did try to help you in the past, I didn’t even get a “thank you,” incidentally).