html,
body {
    margin: 0;
    padding: 0;
    height: 100%;
}

p {
    margin: 0;
}

.page {
    position: relative;
    height: 100%;
}

.popup {
    position: absolute;
    z-index: 200;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    opacity: 0;
    visibility: hidden;
    transition: .3s ease;
}

.show-popup .popup {
    opacity: 1;
    visibility: visible;
}

.popup > iframe {
    position: absolute;
    top: 50px;
    left: 50%;
    margin-left: -280px;
}

#x {
    position: absolute;
    background: white;
    color: black;
    top: 10px;
    right: 10px;
}

.inline-block {
    display: inline-block;
    width: 30%;
    padding: 1%;
}