html, body {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
  width: 100%;
  overflow-x: hidden;
  position: relative;
  -webkit-overflow-scrolling: auto !important;
  background-color: #f8fbfd;
}

.nav {
  position: fixed;
  z-index: 100 !important;
  left: 18px;
  top: 10px;
  font-size: 2em;
  line-height: 1.3em;
  font-family: Arial;
}

a {
  text-decoration: none;
}

a:hover {
  color: red;
}

.on {
  color: red;
}

.off {
  color: black;
}

iframe {
  height: 100vh !important;
  border: none;
  width: 84%;
  margin-left: 120px;}