.loading-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 15em;
    font-family: 'Courier New', Courier, monospace;
    font-size: 1.2em;
    color: #004f9e;
}
.spinner {
    border: 6px solid #e0e0e0;
    border-top: 6px solid #007bff; /* blue accent */
    border-radius: 50%;
    width: 48px;
    height: 48px;
    animation: spin 1s linear infinite;
    margin-bottom: 1em;
    box-shadow: 0 0 .5em rgba(0,123,255,0.15);
}