Why isn't my CSS working? Understanding specificity and the override mechanism

I added CSS, but the text color and margins didn't change.It worked when I rewrote the same specification at the bottom of ...
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What is CSS? Understanding the coding language that styles a webpage beyond plain text and photos

Even if you're unfamiliar with the term itself, CSS is a website coding component that any internet user has experienced. While you may not know exactly what CSS is, it's something to embrace — CSS ...