HTML example:
Additional classes:
.nk-header-title-sm
– small size;.nk-header-title-md
– mid size;.nk-header-title-xmd
– mid size;.nk-header-title-lg
– large size;.nk-header-title-xl
– x-large size;.nk-header-title-full
– fullscreen size;.nk-header-title-parallax
– parallax for background image;.nk-header-title-parallax-opacity
– opacity parallax for content;