Using just CSS, no jQuery, javascript or any other programming language, this is an auto/manual slideshow.

The slideshow is responsive and will adjust the images to suit both landscape and portrait browser size.

The slideshow will stay full browser width and height.

It does not use radio inputs, checkbox inputs or links.

The slideshow is auto run, but you can select the next image by click/tapping a square button. The slideshow will then continue from the selected image.

CSS Play has developed this method of producing auto/manual slideshows over the last 12 months.