engine/app/assets/stylesheets/locomotive/inline_editor/layout.css.scss

body {
  position: relative;
  background: transparent;
}

#page {
  position: relative;
  padding-top: 40px;

  iframe {
    width: 100%;
    height: 100%;
    display: block;
  }
}

#content-locale-picker {
  position: fixed;
  top: 44px;
  right: 70px;
}