problem with grid

Hi,I'm really new with zen-grids and I want to create some grid then i followed your approach in site with this url(https://designshack.net/articles/css/zen-grids-a-responsive-grid-system-built-on-sass/)but it doesn't work for me properly 
when i saw my page i have hr scroll and each div has 100% ?what should i do?please help me
