CSS, opacity: 0.9;
opacity: 0.9; = 90% visible (10% transparent/see-through)
The element is mostly solid but slightly transparent
mdash:
— is the HTML entity code for an em dash (—), which is a long dash used in punctuation.
Key facts:
What it displays as: — (a long dash, width of capital "M")
Name: Em dash (also called "mdash")
Length: Longer than an en dash (–) and hyphen (-)
Purpose: Marks a strong break in a sentence, sets off extra information like parentheses, or replaces a colon/semicolon
When you see the code itself: If — appears literally on a webpage, the HTML wasn't written correctly (often missing the semicolon ; at the end)
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