div>
    <div class='solar_systm'>
      <div class='earth planet'>
        <div class='moon moon'>
          <h3>Moon</h3>
          <h2>Moon</h2>
        </div>
        <div class='m trajectory'></div>
        <div class='earth planet_description'>
          <h2>Planet</h2>
          <h1>Earth</h1>
          <p>Earth, our home. It is the only planet known to have an atmosphere containing free oxygen, oceans of liquid water on its surface, and, of course, life.</p>
          <label for='readEarth'>
       