Header customization via Elements

Hi team

loving your premium theme. while customizing i am facing hurdle you can say

I tried to use elements to customize header but nothing is happening.....in your element video tutorial i can see some html/css code in content box while creating header element....should i have to write it by my own css or shortcode or there is way to do it like ready made shortcodes, css/html, so i can copy and paste. Pls guide where i can find css/html code to setup awesome headers, hero images, sliders

Looking fwd
Adeel Ahmed