Even if it was looking OK using `margin-left`, there were probably edge
cases where it wouldn't behave as we expected.
As mentioned in the previous commit, this won't be necessary once
everyone uses browsers supporting the `gap` property in flexbox layouts,
but this won't happen for a few years.
In a few months we might also consider using the `margin-inline-start`
property, which is currently supported by about 97% of the browsers [1].
[1] https://caniuse.com/css-logical-props
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