.center-div
{
  position: absolute;
  margin: auto;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 50%;
  height: 10%;
  font-weight: bold;
}


.loader {
  border: 16px solid #f3f3f3;
  border-radius: 50%;
  border-top: 16px solid #3498db;
  width: 120px;
  height: 120px;
  -webkit-animation: spin 2s linear infinite;
  animation: spin 2s linear infinite;
}


/* 

body {
  background:url("/dist/resources/images/london.jpg");

}
body:before {
content:"";
display:block;
position:fixed;
width:100%;
height:100%;
left:0;
top:0;
z-index:-1;
background-color: rgba(255, 255, 255, 0.7);
} */