.gradient-link {
    color: white;
    text-decoration: none;
    -webkit-transition: color 0.6s;
    -moz-transition: color 0.6s;
    -o-transition: color 0.6s;
    transition: color 0.6s;
}

.gradient-link-hidden {
    color: #212121;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.gradient-link:hover {
    color: gray;
    text-decoration: none;
}

.gradient-link:visited {
    color: white;
}

.gradient-link-hidden:visited {
    color: #212121;
}