Level 8 span keyword not works

[jvvppereira]

If I input span, it shows that is wrong

But if I write any other word, like s, sp, spa, spam, works:

[jvvppereira]

I think that this issue is linked with #86

[Marta-Lebiotkowska]

@jvvppereira I think this is correct behaviour, because grid-column-end: spa is accepted as a custom identifier. https://developer.mozilla.org/en-US/docs/Web/CSS/grid-column-end