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

.overlayCSS{
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
}

.loaderCSS{
	width: 50px;
    height: 50px;
    border: 5px solid #f3f3f3;
    border-top: 5px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}