html, body { 
  min-height: 100%;
  background-color: white;
}

body { 
  position: relative;
}

h1 { 
  color: navy;
  margin-left: 20px;
}

.overlay {
  position: absolute;
  top: 10;
  left: 10;
  width: 100%;
  height: 100%;
  z-index: 10;
  background-color: rgba(0,0,0,0.5);
}


a.button {
  -webkit-appearance: button;
  -moz-appearance: button;
  appearance: button;

  text-decoration: none;
  color: initial;
}