z-index Sass management

Change the order of $z-indexes in CSS(SCSS)

z-index:

.top-nav

z-index:

.left-nav

z-index:

.content

z-index:

.img-1

z-index:

.img-2

z-index:

.mkt-flash position by .top-nav

z-index:

.cookies-info

z-index:

.up-btn