index.html

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <meta http-equiv="X-UA-Compatible" content="ie=edge">
        <link rel="stylesheet" href="node_modules/bootstrap/dist/css/bootstrap.min.css">
        <title>Astrobootcamp004</title>
    </head>
    <!--Background is setting in js script-->
    <body class="container">
        <h1>
            Galaxia
        </h1>
        <hr>


        <div class="row">
        <select id="galaxiaSelect">

        </select>

        <div id="informacionGalaxia" class="row" hidden="hidden">
            <span>Lista de planetas</span>
            <ul id="listaPlanetas">
                    <li>Saturno</li>
            </ul>

        </div>
        
        <button onclick="seleccionar()">Seleccionar</button>
        <button onclick="mostrarDetalleGalaxia()">Detalle</button>
        
        <script src="js-e007.js"></script>
        

    </body>
</html>