Anons79 Mini Shell

// Tabs navigation

var total = document.querySelectorAll("[nav-pills]");

total.forEach(function (item, i) {
  var moving_div = document.createElement("div");
  var first_li = item.querySelector("li:first-child [nav-link]");
  var tab = first_li.cloneNode();
  tab.innerHTML = "-";
  tab.classList.remove("bg-inherit", "text-slate-700");
  tab.classList.add("bg-white", "text-white");
  tab.style.animation = ".2s ease";

  moving_div.classList.add("z-10", "absolute", "text-slate-700", "rounded-lg", "bg-inherit", "flex-auto", "text-center", "bg-none", "border-0", "block");
  moving_div.setAttribute("moving-tab", "");
  moving_div.setAttribute("nav-link", "");
  moving_div.appendChild(tab);
  item.appendChild(moving_div);

  var list_length = item.getElementsByTagName("li").length;

  moving_div.style.boxShadow = "0 1px 5px 1px #ddd";
  moving_div.style.padding = "0px";
  moving_div.style.width = item.querySelector("li:nth-child(1)").offsetWidth + "px";
  moving_div.style.transform = "translate3d(0px, 0px, 0px)";
  moving_div.style.transition = ".5s ease";

  item.onmouseover = function (event) {
    let target = getEventTarget(event);
    let li = target.closest("li");
    if (li) {
      let nodes = Array.from(li.closest("ul").children);
      let index = nodes.indexOf(li) + 1;
      item.querySelector("li:nth-child(" + index + ") [nav-link]").onclick = function () {
        item.querySelectorAll("li").forEach(function (list_item) {
          list_item.firstElementChild.removeAttribute("active");
        });
        li.firstElementChild.setAttribute("active", "");
        moving_div = item.querySelector("[moving-tab]");
        let sum = 0;
        if (item.classList.contains("flex-col")) {
          for (var j = 1; j <= nodes.indexOf(li); j++) {
            sum += item.querySelector("li:nth-child(" + j + ")").offsetHeight;
          }
          moving_div.style.transform = "translate3d(0px," + sum + "px, 0px)";
          moving_div.style.height = item.querySelector("li:nth-child(" + j + ")").offsetHeight;
        } else {
          for (var j = 1; j <= nodes.indexOf(li); j++) {
            sum += item.querySelector("li:nth-child(" + j + ")").offsetWidth;
          }
          moving_div.style.transform = "translate3d(" + sum + "px, 0px, 0px)";
          moving_div.style.width = item.querySelector("li:nth-child(" + index + ")").offsetWidth + "px";
        }
      };
    }
  };
});

// Tabs navigation resize

window.addEventListener("resize", function (event) {
  total.forEach(function (item, i) {
    item.querySelector("[moving-tab]").remove();
    var moving_div = document.createElement("div");
    var tab = item.querySelector("[nav-link][active]").cloneNode();
    tab.innerHTML = "-";
    tab.classList.remove("bg-inherit");
    tab.classList.add("bg-white", "text-white");
    tab.style.animation = ".2s ease";

    moving_div.classList.add("z-10", "absolute", "text-slate-700", "rounded-lg", "bg-inherit", "flex-auto", "text-center", "bg-none", "border-0", "block");
    moving_div.setAttribute("moving-tab", "");
    moving_div.setAttribute("nav-link", "");
    moving_div.appendChild(tab);

    item.appendChild(moving_div);

    moving_div.style.boxShadow = "0 1px 5px 1px #ddd";
    moving_div.style.padding = "0px";
    moving_div.style.transition = ".5s ease";

    let li = item.querySelector("[nav-link][active]").parentElement;

    if (li) {
      let nodes = Array.from(li.closest("ul").children);
      let index = nodes.indexOf(li) + 1;

      let sum = 0;
      if (item.classList.contains("flex-col")) {
        for (var j = 1; j <= nodes.indexOf(li); j++) {
          sum += item.querySelector("li:nth-child(" + j + ")").offsetHeight;
        }
        moving_div.style.transform = "translate3d(0px," + sum + "px, 0px)";
        moving_div.style.width = item.querySelector("li:nth-child(" + index + ")").offsetWidth + "px";
        moving_div.style.height = item.querySelector("li:nth-child(" + j + ")").offsetHeight;
      } else {
        for (var j = 1; j <= nodes.indexOf(li); j++) {
          sum += item.querySelector("li:nth-child(" + j + ")").offsetWidth;
        }
        moving_div.style.transform = "translate3d(" + sum + "px, 0px, 0px)";
        moving_div.style.width = item.querySelector("li:nth-child(" + index + ")").offsetWidth + "px";
      }
    }
  });

  if (window.innerWidth < 991) {
    total.forEach(function (item, i) {
      if (!item.classList.contains("flex-col")) {
        item.classList.add("flex-col", "on-resize");
      }
    });
  } else {
    total.forEach(function (item, i) {
      if (item.classList.contains("on-resize")) {
        item.classList.remove("flex-col", "on-resize");
      }
    });
  }
});

function getEventTarget(e) {
  e = e || window.event;
  return e.target || e.srcElement;
}