.loader {
    width: 100%;
    height: 100%;
    position: absolute;
    background-color: white;
    z-index: 100;
    display: flex;
}

.spinner {
    border: 16px solid #f3f3f3; /* Light grey */
    border-top: 16px solid #3498db; /* Blue */
    border-radius: 50%;
    width: 120px;
    height: 120px;
    position: relative;
    animation: spin 2s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
  align-self: center;
}