Explanation about making elements only visible for a screen reader

I am wondering why the table should be set to -10000px left? Why -10000? Why not -1000 or -1000000? This seems like a hacky work around, doesn’t html have a tag that makes things invisible but readable for screen readers?

Challenge: Make Elements Only Visible to a Screen Reader by Using Custom CSS

Link to the challenge:

It’s an arbitrary number. There are a bunch of different ways to do accessible content hiding.

Some links

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Hey there,

this is actually a good question!

When you decrease the number from -10000px to -1px, the content overlays other content. So -10000px is a big enough number to not overlay the content on probably any screen size.

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