body,
html {
  font-family: sans-serif;
  background: #ffcc33;
  height: 100%;
  position: relative;
  overflow: hidden;
  margin: 0;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: -moz-none;
  -ms-user-select: none;
  -o-user-select: none;
  user-select: none;
}

.demo {
  visibility: hidden;
}

.bg {
  font-size: 40vh;
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  font-family: Kanit, sans-serif;
  font-weight: 900;
  line-height: 100vh;
}

.demo div {
  position: absolute;
  display: inline-block;
  left: 50%;
  top: 50%;
  font-weight: 800;
  font-size: 50px;
  line-height: 60px;
  color: #1c70a7;
  opacity: 0;
  width: 100%;
  text-align: center;
  font-family: Arial, sans-serif;
  transform: translate(-50%, -50%);
}

.footer {
  position: fixed;
  bottom: 0;
  padding: 20px;
}