Issues with grid

.container {

display: grid;

grid-template: repeat(3,100px) / repeat(2,100px);

border: 3px solid lightgrey;

I’am having some issues when i look at the grid with dev tools. In the layout section, under overlay display setting when i select show track size, the values on the grid are not the same. It shows 100px-80px, instead of 100px-100px. I wrote the code exactly as Mosh did in the video but values are different.