.loading {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #FFFFFF;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: 1s all;
    opacity: 0;
}
    .loading.show {
        opacity: 1;
    }
    .loading .spin {
        border: 10px solid hsla(202, 100%, 35%, 0.2);
        border-top-color: #0071b4;
        border-radius: 50%;
        width: 100px;
        height: 100px;
        animation: spin 1s linear infinite;
    }
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}