html::after {
    content: '';
    background-image: url("img/cert-top.jpg"), url("img/cert-bottom.jpg"), url("img/cert-middle.jpg"), url("img/sign-left.png"), url("img/sign-right.png");
}
html::before {
    content: '労働保険関係成立之証事業の名称所在地承認を受けた者氏年月日有効期限基礎額証明中小企業経営務懇話会長岩城眞也';
    font-family: "Yuji Syuku", serif;
    font-weight: 400;
    position: absolute;
    top: -9999px;
    left: -9999px;
}