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

.background {
  background-image: url('../images/background.jpg');
  min-height: 100%;
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.disable {
  pointer-events: none;
}

.image_op {
  opacity: .5;
  transition: ease-in .5s;
}

.image_op:hover {
  opacity: .75;
  transition: ease-in .5s;
}

p,h1,h2,h3 {
  color: white;
}