style.css

*
{
    margin:0;
    padding:0;
    font-family:consolas;
}
body
{
    background: #000;
}
section
{
    padding:10px
}
section h2
{
    font-size:3.5em;
    color:#555;
}
section p
{
    font-size:1.2em;
    color:#555;   
}
#scrollpath
{
    position: fixed;
    top: 0;
    right: 0;
    width: 10px;
    height: 100%;
    background: rgba(red, green, blue, alpha);
}
#progressbar
{
    position:fixed;
    top: 0;
    right: 0;
    width: 10px;
    background: linear-gradient(to top,#008aff,#00ffe7);
    animation: animate 5s infinite;
}
#progressbar:before,
#progressbar:after
{
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top,#008aff,#00ffe7);
    filter: blur(10px);
}
#progressbar:after
{
    filter: blur(30px);
}
@keyframes animate
{
    0%,100%
    {
        filter: hue-rotate(0deg);
    }
    50%
    {
        filter: hue-rotate(360deg);
    }
}
::-webkit-scrollbar
{
    width: 0;
}
#percent
{
    position: fixed;
    top: 50%;
    transform: translateY(-50%) rotateX(180deg) rotateY(180deg);
    right: 15px;
    color: #fff;
    font-size: 2em;
    writing-mode: vertical-rl;
    text-orientation: sideways;
}
h2 {text-align: center;}
img {
    display: block;
    margin-left: auto;
    margin-right: auto;
  }