Design a Website Mockup using Semantic UI

Hello, I have my own site that I've develop, my issue is that I'm more a developer than a designer. Right now the design on the site is based on a poor Bootstrap 3 template. I'm looking for someone that helps me to improve my design there. I'm looking for a basic theme based preferably in Semantic UI, but I accept also Bootstrap. I want the theme to be responsive. I need just few examples page like: - Home - Category List - Post List - Post detail - Contact I'm pretty interested also in the header, I'm open to some good design, maybe retractible on scroll, or a bigger one... If you want you can check the actual site [login to view URL] to see the logo or how the pages are right now so you can understand better what I'm looking for. I only need the design/theme part, you can put the contents as you want or Lorem Ipsums, I'll integrate the theme by my self If you need any other information, don't hesitate asking.