fix: move theme class to root node to prevent white flash (#392)

Alexander Sohn

18.46.2022 c36e1d8fff70ab6a817e00aa053b996342554681

 assets/scss/partials/layout/_body.scss

@@ -2,12 +2,8 @@
  width: 100%;
  margin: 0 auto;
  // work around to style body
  &.theme--dark {
    color: $primary--darkmode;
    background-color: $accent--darkmode;
  }
  &.theme--light {
    color: $primary--lightmode;
    background-color: $accent--lightmode;
  @include themed() {
    color: t('primary');
    background-color: t('accent');
  }
}