.overlay {
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    background-color: rgba(255, 255, 255, 0.8);
}

.overlay-content {
    position: absolute;
    transform: translateY(-50%);
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    top: 50%;
    left: 0;
    right: 0;
    text-align: center;
    color: #555;
}

.hidden {
    display: none;
}

#paymentResponse {
    font-size: 17px;
    border: 1px dashed;
    padding: 10px;
    color: #EA4335;
    margin-top: 0;
    margin-bottom: 10px;
}

.status {
    padding: 15px;
    color: #000;
    background-color: #f1f1f1;
    box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.16), 0 2px 10px 0 rgba(0, 0, 0, 0.12);
    margin-bottom: 20px;
}

.status h1 {
    font-size: 1.8em;
}

.status h4 {
    font-size: 1.3em;
    margin-bottom: 0;
}

.status p {
    font-size: 1em;
    margin-bottom: 0;
    margin-top: 8px;
}

.btn-link {
    display: inline-block;
    font-weight: 400;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    border: 1px solid transparent;
    padding: .375rem .75rem;
    font-size: 1rem;
    line-height: 1.5;
    border-radius: .25rem;
    transition: color .15s ease-in-out, background-color .15s ease-in-out, border-color .15s ease-in-out, box-shadow .15s ease-in-out;
    text-decoration: none;
}

.btn-link {
    color: #007bff;
    background-color: transparent;
    border-color: #007bff;
}

.btn-link:hover,
.btn-link:active,
.btn-link:focus {
    color: #fff;
    background-color: #007bff;
    border-color: #007bff;
    text-decoration: none;
}

.success {
    color: #34A853;
}

.error {
    color: #EA4335;
}