.loader {
    display: none;
    border: 3px solid #ccc;
    border-radius: 50% !important;
    border-top: 3px solid #000;
    width: 20px;
    height: 20px;
    -webkit-animation: spin 1.5s linear infinite;
    animation: spin 1.5s linear infinite;
    margin-bottom: 10px;
}