#user-manual {
  display: flex;
  align-items: center;
  width: 100%;
  height: 100vh;
  background: #F2F2F2;
  font-family: 'Nanum Gothic', sans-serif;
  overflow: hidden;
}

header {
  width: 100%;
  max-width: 400px;
  height: 100vh;
  margin-right: auto;
  padding: 30px;
  background: #282866;
}

.logo {
  padding: 20px;
  text-align: center;
  border: solid 4px #FFFFFF;
}

.logo a {
  display: block;
  margin: auto;
  color: #FFFFFF;
  font-size: 22px;
}

.menu {
  color: #7F7FB1;
  font-size: 15px;
}

.menu-item {
  margin-bottom: 1.25rem;
}

.menu-link.active,
.single-menu.active {
  color: #FFFFFF;
}

.menu-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.menu-link:hover,
.sub-menu-link:hover,
.single-menu:hover {
  color: #FFFFFF;
}

.menu-chevron {
  margin-left: auto;
  font-size: 12px;
}

.active .menu-chevron {
  transform: rotate(180deg);
  -webkit-transition: 0.2s;
  -moz-transition: 0.2s;
  -o-transition: 0.2s;
  transition: 0.2s;
}

.sub-menu {
  display: none;
  margin-left: 1rem;
}

.sub-menu-item {
  width: 90%;
  margin: 1rem 0;
}

.sub-menu-link.active {
  color: #FFFFFF;
  cursor: default;
}

.sub-menu-with-child {
  display: flex;
}

.sub-menu-child {
  display: none;
  margin-left: 0.5rem;
}

.sub-menu-with-child.active,
.sub-menu-child-link.active,
.sub-menu-with-child:hover {
  color: #FFFFFF;
}

#content {
  width: 100%;
  height: 100vh;
}

#content iframe {
  width: 100%;
  height: 100vh;
  background: #FFFFFF;
}