.reveal ul.verticator {
    font-size: 15px;
    list-style: none;
    right: 6vmin;
    top: 50%;
    transform: translateY(-50%);
    left: auto;
    display: block;
    opacity: 0;
    transition: .15s opacity ease-in-out;
    z-index: 10;
    position: fixed;
    display: flex;
    flex-direction: column;
}

.reveal ul.verticator.visible {
    opacity: 1;
}

.reveal ul.verticator li a {
    display: block;
    position: relative;
    width: 1.2em;
    height: 1.2em;
    opacity: 0.75;
    color: white;
}

.reveal ul.verticator li a:after {
    position: absolute;
    display: block;
    content: '';
    width: 5px;
    height: 5px;
    background: currentColor;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    left: 50%;
    top: 50%;
    transition: all .1s ease-in-out;
}

.reveal ul.verticator li a:hover {
    opacity: 1;
}

.reveal ul.verticator li a:hover:after {
    transform: translate(-50%, -50%) scale(1.5);
}

.reveal ul.verticator li.active a:after {
    transform: translate(-50%, -50%) scale(2.5);
}