/* The actual spinner ring */
.spinner {
    display: none; /* Hidden by default */
    width: 18px;
    height: 18px;
    border: 2px solid #ffffff;
    border-vertical-align: middle;
    border-bottom-color: transparent;
    border-radius: 50%;
    margin-left: 10px;
    animation: rotation 1s linear infinite;
    vertical-align: middle;
}

/* The animation logic */
@keyframes rotation {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Dim the button when it's processing */
button:disabled {
    background-color: #95a5a6 !important;
    cursor: not-allowed;