Why bullets go out of the box ?

i am creating a page as a training :

<!DOCTYPE html>
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<html lang="en">
        <title>chapter 1 me!</title>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <link href="style.css" rel="stylesheet" type="text/css"/>
            <img src="images/SOC-Logo.png" alt=""/>

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