Font Size Mixup

Trying to go through Codeacademy HTML & CSS.  Get to HTML Basics II, Font family.
<!DOCTYPE html>
<html>
      <head>
            <title>Loving the font changes</title>
      </head>
      <body>
            <h1 style="font-family: Arial">Big title</h1>
             <ol>
                   <li "font-family: Arial; font-size:16px">
                   This item is big Arial.
                   </li>
                   <li "font-family: Verdana; font-size:12px">
                   This item is medium Verdana.</li>
                   <li "font-family: Impact; font-size:10px">
                   This item is small Impact.</li>
             </ol>
      </body>
</html>

When I submit i get error:
Oops, try again. It looks like your second <li>'s font-size is 16px instead of 12px.

Anybody see what's wrong?
Instructions from codeacademy
Change the font size of the first listed item (<li>) to 16px and the font to Arial.
Change the font size of the second listed item to 12px and the font to Verdana.
Change the font size of the third listed item to 10px and the font to Impact.
xoxomosAsked:
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Dave BaldwinFixer of ProblemsCommented:
You are missing 'style=' on each of the <li's.  Without that, it is not a 'style' declaration.

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xoxomosAuthor Commented:
Big thanks once again!
Dave BaldwinFixer of ProblemsCommented:
You're welcome.
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