.emergency__backdrop {
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    left: 0;
    background: rgba(0,0,0,0.5);
    display: none;
}

.emergency--loading .emergency__backdrop {
    display: block;
}

.emergency__loader {
    border: 8px solid #f3f3f3; /* Light grey */
    border-top: 8px solid #3498db; /* Blue */
    border-radius: 50%;
    width: 70px;
    height: 70px;
    animation: spin 2s linear infinite;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    display: none;
}

.emergency--loading .emergency__loader {
    display: block;
}


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