html, body {
        height: 100%;
        width: 100%;
        padding: 0;
        margin: 0;
      }

      #full-screen-background-image {
        z-index: -999;
        min-height: 100%;
        min-width: 1024px;
        width: 100%;
        height: auto;
        position: fixed;
        top: 0;
        left: 0;
      }

     

  body {
    display: flex;
    min-height: 100vh;
    flex-direction: column;
  }

  main {
    flex: 1 0 auto;
  }