.calendar-disabled {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    -webkit-box-shadow: inset 10px 10px 100px 200px rgba(0,0,0,0.3);
    -moz-box-shadow: inset 10px 10px 100px 200px rgba(0,0,0,0.3);
    box-shadow: inset 10px 10px 100px 200px rgba(0,0,0,0.3);
    display: none;
}
.calendar-enable-button {
    margin-top: 30% !important;
}
.calendar {
    position: relative;
}