.modal.wait-modal {
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    padding-bottom: 100px;   /*need this because embedded iframe could be of any size 100px distance from bottom in child iframe is enough; user could be at any part (above/below scroll) of parent containing body */
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    align-content: end;
}

.wait-content {
    text-align: center;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #333;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0%   { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.display-block {
    display: block !important;
}
.display-none {
    display: none !important;
}