The Story is free Bootstrap (v4.0 alpha 2) theme. There are 4 content pages 4 different background images with fade in-out. This is a mobile ready fluid layout. Gallery page uses a flex image slider.
Strip Bootstrap 4.0 theme uses a fluid container for responsive design. There are 4 color strips with alternative text curved box for each section. This layout is for a minimal content. Strip
Elevate is clean and simple Bootstrap 4.0 responsive theme. This is a minimal layout for making a quick and easy website. Elevate
Sigma Bootstrap 4 theme features metro-style image gallery with responsive lightbox and multiple content columns. This is a fluid layout easy to customize for your website. Sigma