Update index.md (#24808)

Added comma in the second sentence to clarify the subject of the sentence.
This commit is contained in:
Kristen Kinnear-Ohlmann
2018-11-01 02:59:31 -05:00
committed by Manish Giri
parent 36652a74f3
commit 7a51e27367

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@ -15,7 +15,7 @@ title: Introduction to CSS
Cascading Style Sheets (CSS) describe how the html on a page should appear.
Before CSS developers would apply styles using attributes or special tags on each node of a page. This made markup repetitive and prone to errors.
Before CSS, developers would apply styles using attributes or special tags on each node of a page. This made markup repetitive and prone to errors.
CSS allows selectors to describe how each piece of matching content should look.