#wrapper {
    display: flex;
    justify-content: center;
    flex-direction: row;
    align-items: stretch;
}

.loader {
    border: 8px solid #f3f3f3; /* Light grey */
    border-top: 8px solid #586169; /* Dark grey */
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 2s linear infinite;
  }

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