Call to action header
To replicate the online demo homepage #1 and #2 please use the slider page template. The 'back others' and 'get funded' links can be inserted the CTA header using the page settings options.
Please select the Slider template (Adding Pages), then go to Page options and choose the Call to action header type (screenshot). In the CTA header > CTA list you can create up to four call to action boxes that will appear in the header. Here you'll find the options to add the title, text, image and button for the boxes.