grid template columns

[Doedelpumpe]

All my Columns have the same width. I would like to set a "layout" for my whole table like

.List {
display: grid;
grid-template-columns: 6fr 1fr 2fr 1fr 2fr;
}

all my attempts yet failed.

As i dont want to spam two topics i add my second question here as well:
How do i place numbers in the center of the cell?

text-align: center;

puts numbers in the horizontal center but not in the vertical. No command i tried worked.

[Doedelpumpe]

I found my mistake. I used the 'Virtualized Rows'-Example and it had useBlockLayout used. As i removed that my 'display: grid' layouting worked and also the placing in the center of the cell worked. No idea how to work with useBlockLayout.