body {
    margin: 0;
    padding: 0;
    
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    height: 100vh;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6); 
    z-index: 0;
  }

  .content {
    position: relative;
    z-index: 1; 
  }