Uploading Problems

Ok, guys, have tu ever had this problem cuz I dunno how to fix it: Like, when tu type your stories on Microsoft Word o whatever and tu use italics, like maybe a whole sentence in italics, it's all fine on the document, right? But when I subir it, all the italic and bold letters just mash together and makes everything really hard to understand.
Have any of tu ever had that problem? If so, do tu know how to fix it?