a.pay-invoice-button {
    position: absolute;
    top: 9px;
    right: 325px;
    font-family: alternate-gothic-no-1-d,arial;
    text-decoration: none;
    color: white;
    background: #e44234;
    font-size: 26px;
    padding: 10px 16px 8px;
    line-height: 1;
    border: 2px solid #222;
    transition: .2s;
}

a.pay-invoice-button:hover {
    background: white;
    color: #222;
    transition: .2s;
}