.scrollbar-wrapper {
    position: relative;
    overflow: hidden;
}
.scrollbar-track{
    right: 2px;
    top: 2px;
    background: transparent;
    z-index: 100;
    height: calc(100% - 4px);
    position: absolute;
}
@media only screen and (max-width: 599px) {
    .scrollbar-track{
        width: 5px;
    }
    .scrollbar-thumb {
        width: 5px;
        border-radius: 10px;
    }
}


@media only screen and (min-width: 600px){
    .scrollbar-track {
        width: 7px;
    }
    .scrollbar-thumb {
        width: 7px;
        border-radius: 8px;
    }
}

.scrollbar-thumb {
    transition: opacity 0.3s ease-out;
    z-index: 100;
    position: absolute;
    content: '';
    background: black;
    opacity: 0;
}
.scrollbar-thumb.thumb-show {
     opacity: 0.4;
}

.scrollbar-content {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: auto;
}

.scrollbar-content::-webkit-scrollbar {
    display: none;
}

.scrollbar-children{
    z-index: 2;
    overflow: hidden;
}