body {
  background-color: white;
}
h1 {
  font-size: 48px;
}
h3 {
  font-weight: 200;
}

#divbienve{
  font-family: Arial, sans-serif;
  color: #5e5e5e;
  text-align: center;
  position: absolute;
  top: 50%;
  left: 50%;
  margin-top: -150px;
  margin-left: -40%;
  width: 80%;
  height: auto;
}

.backstretch {
  opacity: 0.2;
}

.bientitle {
  margin-bottom:-20px;
}