.scrollbar-container {
    position: fixed;
    display: block;
    width: 6px;
    height: 100vh;
    right: 0px;
    top: 0px;
    z-index: 100;
    opacity: 0;

    -webkit-transition: opacity 0.4s, width 0.2s;
    -moz-transition: opacity 0.4s, width 0.2s;
    -ms-transition: opacity 0.4s, width 0.2s;
    transition: opacity 0.4s, width 0.2s;
}

.scrollbar-container:hover {
    opacity: 1;
    width: 10px;

    -webkit-transition: opacity 0.2s, width 0.2s;
    -moz-transition: opacity 0.2s, width 0.2s;
    -ms-transition: opacity 0.2s, width 0.2s;
    transition: opacity 0.2s, width 0.2s;
}

.scrollbar-item {
    position: absolute;
    display: block;
    width: 100%;
    height: 0px;
    left: 0px;
    top: 0px;
    background: #222;
    border-radius: 3px;
    cursor: grab;

    -webkit-transition: border-radius 0.2s;
    -moz-transition: border-radius 0.2s;
    -ms-transition: border-radius 0.2s;
    transition: border-radius 0.2s;
}

.scrollbar-container:hover .scrollbar-item {
    border-radius: 5px;

    -webkit-transition: border-radius 0.2s;
    -moz-transition: border-radius 0.2s;
    -ms-transition: border-radius 0.2s;
    transition: border-radius 0.2s;
}

.fade-in {
    opacity: 1 !important;

    -webkit-transition: opacity 0.2s;
    -moz-transition: opacity 0.2s;
    -ms-transition: opacity 0.2s;
    transition: opacity 0.2s;
}