.custom-spinner {
    display: inline-flex;
    border: 3px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    min-width: 20px;
    min-height: 20px;
    max-width: 75%;
    max-height: 75%;
    margin: 0px 5px;
    align-items: center;
    animation: spin 1s linear infinite;
}