.mo_sect {
  min-height: 100vh;
}

.mo_sect .mo_title {
  text-align: center;
}

.mo_opening_sect {
  position: fixed;
  top: 0;
  height: 0;
  background: black;
  width: 100%;
  height: 100%;
  z-index: 999;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}

.mo_opening_sect .hidden_text {
  color: white;
  font-size: 3rem;
}

.mo_opening_sect .hide {
  background: black;
  margin: 0;
  overflow: hidden;
}

.mo_opening_sect .hide span {
  -webkit-transform: translateY(100%);
          transform: translateY(100%);
  display: inline-block;
}

[class^=MJX_], .CtxtMenu_MenuFrame {
  display: none !important;
}

.mo_section_holder {
  padding-left: 20px;
}

.mo_section_holder p {
  font-size: 150%;
}

.mo_img_full {
  width: clamp(0px, 100%, 400px);
}

.mo_formula {
  display: none;
  max-width: 100%;
}

.mo_formula .MathJax {
  font-size: 200% !important;
}

.mo_formula mjx-math.MJX-TEX {
  font-size: clamp(0px, 4vw, 2rem);
}

.row {
  max-width: 100vw !important;
}

#navigation-list {
  position: -webkit-sticky;
  position: sticky;
  top: 0;
  z-index: 99;
  overflow-y: scroll;
  max-height: 100vh;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

#navigation-list .active {
  background: #69a3ca;
  border-color: #69a3ca;
}

#navigation-list::-webkit-scrollbar {
  display: none;
}

html {
  scroll-behavior: smooth;
}

body::-webkit-scrollbar {
  display: none;
}

body {
  position: relative;
  overflow: scroll;
}

.row .scrollspy-example {
  height: 100px;
  overflow: scroll;
}