.pib-popup {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.5);
    padding: 40px;
}

.pib-popup-content {
    background-color: #fff;
    border: 2px solid #888;
    width: 100%;
    position: relative;
    margin: 0 auto;
    height: 100%;
}

.pib-close {
    position: absolute;
    top: 20px;
    right: 20px;
    color: #aaa;
    font-size: 40px;
    font-weight: bold;
}

.pib-close:hover,
.pib-close:focus {
    color: #000;
    text-decoration: none;
    cursor: pointer;
}

.pib-popup iframe {
    max-width: 100%;
    width: 100%;
    margin: 0;
    line-height: 1;
    border: none;
    height: 100%;
}