.lock
{
    position: relative;
    overflow: hidden;
}

.lock::before
{
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: 0;
    height: 100%;
    content: '';
    z-index:1001;
    display: block;
    position: absolute;
    overflow: hidden;
    background-image:url('/img/kurt.gif');
    background-position: center center;
    background-repeat: no-repeat;
}

.lock::after {
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: 0;
    height: 100%;
    content: '';
    display: block;
    position: absolute;
    background-color: rgba(97, 126, 255, 0.2);
    z-index:1000;
    overflow: hidden;
}