.loader {
    border: 5px solid #f3f3f3;
    border-radius: 50%;
    border-top: 5px solid blue;
    width: 40px;
    height: 40px;
    -webkit-animation: spin 1s linear infinite;
    animation: spin 1s linear infinite;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}

.loaderDiv {
    border: 0px;
    border-radius: 0px;
    width: 100%;
    height: 100%;
    animation: unset;
    top: 0px;
    left: 0px;
    transform: unset;
    background: black;
    opacity: 0.3;
}

@-webkit-keyframes spin {
    0% {
        -webkit-transform: rotate(0deg);
    }

    100% {
        -webkit-transform: rotate(360deg);
    }
}

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

    100% {
        transform: rotate(360deg);
    }
}