body, html {
  margin: 0;
  overflow: hidden;
  -webkit-transition: opacity 400ms;
  -moz-transition: opacity 400ms;
  transition: opacity 400ms;
}

body, .onepage-wrapper, html {
  display: block;
  position: static;
  padding: 0;
  width: 100%;
  height: 100%;
}

.onepage-wrapper {
  width: 100%;
  height: 100%;
  display: block;
  position: relative;
  padding: 0;
}

.onepage-wrapper .section {
  width: 100%;
  height: 100%;
}