#loading {
   width: 100%;
   height: 100%;
   top: 0;
   left: 0;
   position: fixed;
   display: block;
   opacity: 0.7;
   background-color: #fff;
   z-index: 99;
   text-align: center;
}
.spinner-border {
  position: fixed;
  top: 50%;
  left: 50%;
  z-index: 100;
}

.fa.fw {
    width: 1.28571429em;
    text-align: center;
}