html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: sans-serif;
}
body {  
  background: url(../images/sfondo-web.jpg) center center no-repeat #008ceb;
  background-size: cover;
  text-align: center;
}
.waiting {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
}
.waiting img {
  width: 100px;
}
.waiting .loader{
  transform: scale(0.5);
  /*! margin: 0; */
  margin-left: 2rem;
  margin-top: 0rem;
}