/*See https://www.w3schools.com/howto/tryit.asp?filename=tryhow_css_loader*/

.loader {
    border: 8px solid #f3f3f3;
    border-radius: 50%;
    border-top: 8px solid #888888;
    width: 50px;
    height: 50px;
    -webkit-animation: spin 2s linear infinite;
    animation: spin 2s linear infinite;
    margin: auto;
    margin-top: 5px;
    margin-bottom: 5px;
}

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

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