/* 固定右侧目录，使之不随页面滚动 */
div.cell.aside>.innerCell>.toc-macro {
    position:fixed;
    top:100px;
    height: 75%;
    overflow-y:scroll !important;
    overscroll-behavior: contain !important;
}

/* 不显示目录的滚动条 */
/* Hide scrollbar for Chrome, Safari and Opera */
#main-content > div > div > div.cell.aside > .innerCell > .toc-macro::-webkit-scrollbar {
  display:none;
}
 
/* Hide scrollbar for IE, Edge and Firefox */
#main-content > div > div > div.cell.aside > .innerCell > .toc-macro {
  -ms-overflow-style: none;  /* IE and Edge */
  scrollbar-width: none;  /* Firefox */
}