mj-hero-mode.mjml

<mjml>
  <mj-body>
    <mj-hero
      mode="fixed-height"
      height="469px"
      background-width="600px"
      background-height="469px"
      background-url="https://cloud.githubusercontent.com/assets/1830348/15354890/1442159a-1cf0-11e6-92b1-b861dadf1750.jpg"
      background-color="#2a3448"
      padding="5px"
      padding-bottom="2px"
    >
      <mj-text>
        GO TO SPACE
      </mj-text>
    </mj-hero>
  </mj-body>
</mjml>