div {
    margin: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    font-family: sans-serif;
}

a:link {
    color: lightblue;
    text-decoration: none;
}

a:visited {
    color: lightblue;
    text-decoration: none;
}

a:hover {
    color: blue;
    text-decoration: none;
}

a:active {
    color: blue;
    text-decoration: none;
}