TRABALHO DA ESCOLA

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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="style.css">
    <title>Colégio Estadual Dr. EDUARDO VIRMOND SUPLICY</title>
</head>
    <body>
        <header>
        <div class="principal">
        <h1>COLÉGIO ESTADUAL Dr. EDUARDO VIRMOND SUPLICY</h1>    
            <ul>
                <li>HISTÓRIA</li>
                <li>ALUNOS</li>
            </ul>
        </header>    
        </div>
    </body>
</html>


 CSS
header{
    background-color: #424E61;
    color: white;
}

.principal{
    text-align: center;
}