How to remove the spacing between items?

As already written in the comments can help set property
line-height: 1;
You can try values less than one, e.g. 0.5, etc.
On gridlover.net - move sliders, and click the GRID to see the grid. There you can take the ready CSS for your website with the necessary rules of typography.

https://codepen.io/anon/pen/LmWqwX
line-height: 1 also does not produce the desired effect. You need to experiment. Put 0.75

h1 color: $main-color font-family: 'Titillium Web', sans-serif font-size: 94px font-weight: bold line-height: 0.75