body {
  position: relative;
  min-height: 100vh;
  background-color: black;
  color: rgb(53, 167, 182);
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("Contrallis 5.png");
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  opacity: 0.20;
  pointer-events: none;
  z-index: 0;
}

body > * {
  position: relative;
  z-index: 1;
}
.thumbnail {
  width: 180px;
  max-width: 100%;
  height: auto;
}
footer {
  margin-top: 20px;
  color: rgb(53, 167, 182);
}