.prod {
    background-color: #c0fac0;
    background-image: url("data:image/svg+xml, <svg xmlns='http://www.w3.org/2000/svg' height='100' width='100'><text x='35%' y='0' transform='rotate(45)' opacity='0.06' font-family='Arial' font-weight='1000' font-size='25' fill='black'>PROD</text></svg>");
}

nav li a:hover:before {
    display: block;
}

nav li a:before {
    content: attr(data-tooltip);
    position: absolute;
    transform: translateY(-50%);
    margin-left: 285%;
    width: 200px;
    padding: 10px;
    border-radius: 10px;
    background: #000;
    color: #fff;
    text-align: center;
    display: none;
    margin-top: 15%;
}