.loader {
    border: 16px solid #f3f3f3;
    border-radius: 50%;
    border-top: 16px solid #25408F;
    border-bottom: 16px solid #25408F;
    width: 65px;
    height: 65px;
    -webkit-animation: spin 0.5s linear infinite; /* Safari */
    animation: spin .55s linear infinite;
    left: 50%;
    top: 50%;
    position: absolute;
}

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

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

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

    0% {
        transform: rotate(360deg);
    }
}

/* The Modal (background) */
.modalHidden {
    display: none; /*dont show*/
    position: fixed;
    z-index: 1;
    padding-top: 100px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgb(0,0,0);
    background-color: rgba(0,0,0,0.4);
}

.modalShown {
    display: block; /*shown*/
    position: fixed;
    z-index: 900;
    padding-top: 50px;
    left: 0px;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgb(0,0,0);
    background-color: rgba(0,0,0,0.4);
}