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> **The Cauchy-Schwarz Inequality**

> $$left( \sum_{k=1}^n a_k b_k \right)^2 \leq left( \sum_{k=1}^n a_k^2 \right) left( \sum_{k=1}^n b_k^2 \right)$$

I wonder why their syntax highlighting on this example highlights `left` but not `right`? (I can't seem to reproduce it here, since the HN parser tries to outsmart me.)

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The reason is that their blog rendering auto-identifies that code block as SCSS and treats “left” as an attribute. Which is strange, since I cannot find something for “left” that is not defined for “right”.

For example, I cannot find a “left” attribute here: https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes

Some more details. They are using Highlight.js, and `attribute` is what is applied to (S)CSS properties too. But both `left` and `right` are valid properties. What I think is that `\r` is treated as the special Carriage Return character and therefore doesn’t allow `right` to be identified.

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