#prtools-is-loader {
    display: none;
    width: 100%;
    padding: 40px 0;
    text-align: center;
}

#prtools-is-loader.active {
    display: block;
}

#prtools-is-loader span {
    width: 32px;
    height: 32px;
    border: 3px solid #ddd;
    border-top-color: #888;
    border-radius: 50%;
    display: inline-block;
    animation: prtoolsSpin 0.8s linear infinite;
}

@keyframes prtoolsSpin {
    to { transform: rotate(360deg); }
}