html,
body {
  height: 100%;
  margin: 0;
  background: #fafafa
    url("http://www.copesel.com.ar/wp-content/uploads/2022/07/WhatsApp-Image-2022-06-29-at-2.48.55-PM.jpg")
    no-repeat top center fixed;
  background-size: cover;
  font-family: Helvetica, Arial, sans-serif;
  color: #ffffff;
}
a {
  color: #ffffff;
}
.container {
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
}
.container div {
  text-align: center;
}