blog-source/themes/next/source/css/_common/components/post/post-rtl.styl

.rtl {
  &.post-body {
    p, a, h1, h2, h3, h4, h5, h6, li, ul, ol {
      direction: rtl;
      font-family: UKIJ Ekran;
    }
  }

  &.post-title {
    font-family: UKIJ Ekran;
  }
}