form {
  position: relative;
}

form .loading {
  z-index: 100;
  width: 102%;
  height: 102%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-color: rgba(255, 255, 255, .7);
  transition: 1s;
}

@-webkit-keyframes spin {
  0% {-webkit-transform: rotate(0deg);}
  100% {-webkit-transform: rotate(360deg);}
}
@keyframes spin {
  0% {transform: rotate(0deg);}
  100% {transform: rotate(360deg);}
}
form .loading .loading-indicator {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  -ms-box-sizing: border-box;
  box-sizing: border-box;
  display: block;
  width: 60px;
  height: 60px;
  margin: 0;
  border-width: 12px;
  border-style: solid;
  border-color: transparent #0a6de6 #0a6de6 #0a6de6;
  border-radius: 30px;
  -webkit-animation: spin 1.5s ease infinite;
  animation: spin 1.5s ease infinite;
}