Hi, I have questions to ask about the copyscape and siteliner

Past few days I try to check my website for uniqueness on copyscape, i got no duplicate content for the result. then copyscape suggest i check my website by using siteliner and the result came out about 77% duplicate content for whole of my website. Most of them duplicate within my website content and design such as pages, banner, link and some of them on the content. Any opinion from experience sitepoint member? Thank you in advance.