When click this button then show like the bellow screenshot.
It is very easy to linking this button with this project Slider content area. There only use a ID and use this ID project Slider view button in side the href attribute and there have a another attribute data-element, data-element attribute velue is Why we using this button. we are always use this data-element=”slider”.
And for project detail button always use this class name btn-slider
And for project detail Back button always use this class name btn-slider-back