body {
  background-color: black;
  margin: 0;
}

.fondo {
  background-image: url("../images/fondoAlfaFundacion.jpg");
  height: 543px;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  position: relative;
}

.logo {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}