Nyssa is a free Tumblr blog theme that comes with a beautiful modern layout. This theme has been primarily built to display a lot of text-based contents, but it also displays images nicely. Nyssa theme features a one-column layout with a sidebar. You can also choose to use either the left or right sidebar as per your likings. This theme also supports several Google fonts from which you can select the ones most suitable for your blog. Not to mention, this theme features a responsive layout that works perfectly on any device. If you are looking for a clean yet powerful and modern Tumblr theme, this theme is worth a look.