html, body, .container {
    width: 100%;
    height: 100%;
  }
  
  .container,
  .overlay:before {
    background:#222222 url(../images/logo.png) no-repeat fixed 0 0 / cover;
  }
  
  
  .container {
    align-items: center;
    display: flex;
    justify-content: center;
  }
  
  .overlay {
    margin: 0 auto;
    max-width: 768px;
    overflow: hidden;
    padding: 50px;
    position: relative;
    color: white;
    font-family: 'Lato';
    position: relative;
    text-align: center;
    z-index: 0; 
  }