滾動條css樣式修改
Chrome 71.0.3578.99以上版本適用,以下不適用:   /* 设置滚动条的样式 */  .content_area ul::-webkit-scrollbar {   width:12px;  }  /* 滚动槽 */  .content_area ul::-webkit-scrollbar-track {   -webkit-box-shadow:inset006pxrgba(0,0,0,0.8);   border-radius:10px;   background:rgba(0, 0, 0, .8);  }  /* 滚动条滑块 */  .content_area ul::-webkit-scrollbar-thumb {   border-radius:10px;   background:rgba(255,255,255) !important;   -webkit-box-shadow:inset006pxrgba(0,0,0,0.5);  }  .content_area ul::-webkit-scrollbar-thumb:window-inactive {   background:rgba(255,0,0,0.4);  }   safari瀏覽器可用niceScroll.js代替。   案例:Chrome 用css修改,再寫userAgent,safari用niceScroll.js。   /* 滚动条ie */  .modal-body{    scrollbar-base-color: #144190;    scrollbar-face-color: #ffda2e;    scrollbar-3dlight-color: #144190;    scrollbar-highlight-color: #144190;    scrollbar-track-color: #144190;    scrollbar-shadow-color: #144190;    scrollbar-dark-shadow-color: #144190;  }