html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    background-color: black;
    overflow: hidden;
  }
  
  #canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: 0;
  }
  
  canvas {
    display: block;
    width: 100%;
    height: 100vh;
  }
  
  #overlay {
    position: absolute;
    top: 20px;
    left: 20px;
    color: white;
    font-size: 24px;
    font-family: Arial, sans-serif;
    z-index: 10;
  }

  #overlay h1 {
    margin-top: 1em;
}
  #contact {
    padding-top: 1em;
  }

  #overlay a {
    color: white;
    text-decoration: none;
    padding: 1em 1em;
    border-radius: 1em;
    background: linear-gradient(90deg, black, gray);
    border: 1px solid silver; 
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  }

#overlay a:hover {
    color: black;
    background: linear-gradient(90deg, silver, white);
    border: 1px solid black; 
    box-shadow: 0 6px 8px rgba(0, 0, 0, 0.4);
}

#overlay a:visited {
    color: white;
}

#overlay a:active {
    color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);

}