.loader{
    position: fixed;
    top: 0;
    bottom: 0;
    right: 0;
    left: 0;
    background: rgba(0, 0, 0, .7);
    z-index: 9999999;

    display: flex;
    justify-content: center;
    align-items: center;
}

.loader img{
    width: 50px;
    border-radius: 50%;
}