Lo que hizimos en clase.

<header>
    <div class="caja">
        <h1><img src="../imagenes/logo.png  "></h1>
        <nav>
            <ul>
                <li><a href="index.html">Home</a></li>
                <li><a href="productos.html">Productos</a></li>
                <li><a href="contacto.html">Contacto</a></li>
            </ul>
        </nav>
    </div>
</header>

//Estilos

*{ box-sizing: border-box; margin: 0; padding: 0; }

header { background: #BBBBBB; padding: 20px 0; }

nav li { display: inline; margin: 0 0 0 15px; }

nav a { text-transform: uppercase; color: #000000; font-weight: bold; font-size: 22px; text-decoration: none; } .caja { position: relative; width: 940px; margin: 0 auto; }

nav { position: absolute; top: 110px; right: 0; }

header { background-color: #BBBBBB; padding: 20px 0; }

.caja{ width: 940px; position: relative; margin: 0 auto; }

nav{ position: absolute; top:110px; right: 0; }

nav li{ display: inline; margin: 0 0 0 15px; }

nav a{ text-transform: uppercase; color: #000000; font-weight: bold; font-size: 22px; text-decoration: none; }