.edit-post-layout .wp-block-pmpro-account-invoices-section {
    background: #FAFAFA;
    padding: 20px;
    text-align: center;
}
.edit-post-layout .wp-block-pmpro-account-invoices-section span {
    color: #AAA;
    display: block;
    font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen-Sans, Ubuntu, Cantarell, Helvetica Neue, sans-serif;
    font-weight: 700;
    position: relative;
    text-transform: uppercase;
}
.edit-post-layout .wp-block-pmpro-account-invoices-section span:first-child {
    font-size: 125%;
    font-weight: 300;
    letter-spacing: 1px;
    margin-bottom: 10px;
}