Set tab size to 4 spaces instead of 8?

[salcode]

I'd much prefer all tabs are rendered as 4 spaces instead of 8

See https://snippets.webaware.com.au/snippets/set-tab-size-github-gist-bitbucket/

I think it is worth considering adding

body {
    -moz-tab-size: 4;
    tab-size: 4;
}