body {
  background: url(sat.jpg);
}

.main {
  height: 100vh;
  display: flex;
  align-items: center;
}

p {
  margin-top: 1em;
}

.text {
  background: rgba(0, 0, 0, 0.5);
  padding: 1em;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 5px;
}