#popup {
    visibility: hidden;
    height: 85%;
    width: 85%;
    position: absolute;
    top: 7.5%;
    left: 7.5%;
    z-index: 1;
}

#popup iframe {
    background-color: #fff;
    position: absolute;
    border-radius: 8px;
    height: 100%;
    width: 100%;
    box-shadow: 10px 10px 60px #555;
    display: inline-block;
    vertical-align: middle;
}

.show-popup {
    visibility: visible !important;
    -webkit-animation: fadeIn 1s;
    animation: fadeIn 1s
}

@-webkit-keyframes fadeIn {
    from {opacity: 0;}
    to {opacity: 1;}
}

@keyframes fadeIn {
    from {opacity: 0;}
    to {opacity:1 ;}
}

.popupCloseButton {
    background-color: #ffffff;
    border: 3px solid #ffffff;
    color: #000000;
    border-radius: 50px;
    cursor: pointer;
    font-family: arial, serif;
    font-weight: bold;
    position: absolute;
    top: -2%;
    right: -2.5%;
    font-size: 25px;
    width: 30px;
    height: 30px;
    text-align: center;
    z-index: 2;
    text-decoration: none;
}
.popupCloseButton:hover {
    background-color: #ccc;
}