/* loader */
/* https://www.w3schools.com/howto/howto_css_loader.asp */
/* https://stackoverflow.com/questions/6256043/css-position-loading-indicator-in-the-center-of-the-screen */
.loader {
    z-index:99;
    cursor: pointer;
    position: fixed;
    left: 50%;
    top: 35%;
    border: 16px solid #f3f3f37a;
    border-radius: 50%;
    border-top: 16px solid #409EFF;
    width: 120px;
    height: 120px;
    -webkit-animation: spin 2s linear infinite; /* Safari */
    animation: spin 2s linear infinite;
}

/* Safari */
@-webkit-keyframes spin {
    0% { -webkit-transform: rotate(0deg); }
    100% { -webkit-transform: rotate(360deg); }
}

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