@keyframes spinner {
  to {transform: rotate(360deg);}
}

.mySpinner{
    position: absolute;
    left: 50%;
    top: 50%;
    width: 60px;
    height: 60px;
    margin-left: -25px;
    margin-top: -25px;
    text-align: center;
    vertical-align: middle;
    padding: 10px;
    border-radius: 50%;
    background: white;
    z-index: 1031;
    display: none;
}

 
.spinner:before{
  content: '';
  box-sizing: border-box;
  position: absolute;
  top: 50%;
  left: 50%;
  width: 40px;
  height: 40px;
  margin-top: -20px;
  margin-left: -20px;
  border-radius: 50%;
  border-top: 4px solid #07d;
  border-right: 4px solid transparent;
  animation: spinner .6s linear infinite;
  z-index: 1033;
}