.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 998;
    background: #000;
    opacity: 0.2;
}

#pricematch-enquire-popup {
    position: absolute;
    top: 20%;
    left: calc(50% - 350px);
    width: 100%;
    max-width: 700px;
    z-index: 999;
    background: #fff;
}

#pricematch-enquire-popup .buttons-set{
    margin: 0;
    padding: 8px;
    border-top: 0;
}

#pricematch-enquire-popup .fieldset{
    margin: 0;
}