Answers for "remove any bootstrap css class from html page"

javascript remoev css class

//remove a css class from an element
document.getElementById("myElementID").classList.remove("class_name");

jquery remove class

$("#div1").on("click", function () {
    if ($(this).hasClass("active")) {
      setTimeout(function () {
        $("#div1").removeClass("active");
      }, 10);
    }
  });