.box {
    width: 35%;
    margin: 0 auto;
    background: rgba(255,255,255,0.2);
    padding: 35px;
    border: 2px solid #fff;
    border-radius: 20px/50px;
    background-clip: padding-box;
    text-align: center;
}
.payOverlay {
    position: fixed !important;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.7);
    transition: opacity 500ms;
    visibility: hidden;
    opacity: 0;
    z-index: 999;
}
.payOverlay:target {
    visibility: visible;
    opacity: 1;
}
.payPopup {
    margin: 70px auto;
    padding: 20px;
    background: #fff;
    border-radius: 5px;
    width: 35%;
    position: relative;
    transition: all 5s ease-in-out;
}
.payPopup h2 {
    margin-top: 0;
    color: #333;
    font-family: Tahoma, Arial, sans-serif;
}
.payPopup .close {
    position: absolute;
    top: 10px;
    left: 10px !important;
    right: auto;
    transition: all 200ms;
    font-size: 30px;
    font-weight: bold;
    text-decoration: none;
    color: #333;
    width: 30px;
    height: 30px;
    border: 2px solid #812C21;
    text-align: center;
    border-radius: 30px;
}
.payPopup .close:hover {
    color: #06D85F;
}
.payPopup .content {
    max-height: 30%;
    overflow: auto;
}
.payPopup .content iframe {
    width: 99%;
    padding: 0;
    margin: 0px auto;
    border: 0;
    height: 600px;
    max-height: 80%;
}

@media screen and (max-width: 700px){
    .box{
        width: 90%;
    }
    .payPopup{
        width: 90%;
    }
}