```css
/*.navbar-brand {
  height: 100px;
}*/

/* Warna utama */
:root {
  --maroon: #800020;
  --scopus-orange: #f36c21;
  --border-black: #000000;
}

/* Background utama */
div.container-fluid {
  background-color: var(--maroon);
}

/* Logo */
.navbar-brand.navbar-brand-logo img {
  max-width: 100%;
}

@media (min-width: 768px) {
  .navbar-brand.navbar-brand-logo img {
    max-height: 150px;
  }
}

@media (min-width: 768px) {

  .navbar-brand {
    display: block;
    float: none;
    clear: both;
    margin: 0;
    width: auto;
    height: auto;
  }

  /* Menu navigasi */
  nav#nav-menu.navbar-collapse.collapse {
    border-top: 2px solid var(--border-black);
    border-bottom: 2px solid var(--border-black);
    background-color: var(--maroon);
  }

  .navbar-collapse {
    clear: left;
  }
}

/* Announcement */
section.cmp_announcements.media {
  border: none;
}

/* Tombol submit */
div.pkp_block.block_make_submission a {
  display: block;
  background-color: var(--maroon);
  color: #ffffff;
  border: 1px solid var(--border-black);
  padding: 8px;
  text-align: center;
}

div.pkp_block.block_make_submission a:hover {
  background-color: #660018;
  border-color: var(--border-black);
}

/* Gambar */
section.additional_content img {
  border: 1px solid var(--border-black);
  margin: 10px;
  width: 210px;
  height: 55px;
}

/* Ringkasan */
div#summary.article-summary {
  text-align: justify;
  font-style: italic;
}

/* Referensi */
div.article-references-content {
  text-align: justify;
}

div.article-references-content p {
  text-indent: -36px;
  padding-left: 36px;
}

/* Spasi referensi */
div.article-references-content br:active {
  content: "";
  display: block;
  margin: 1.25em 0;
  text-indent: -36px;
}

div.article-references-content br {
  content: "";
  display: block;
  margin: 1rem;
}

div.article-references-content br::after {
  content: "  ";
  float: left;
  margin-right: 1rem;
  text-indent: -36px;
}

/* Global */
body {
  background-color: #ffffff;
}

/* Semua border menjadi hitam */
* {
  border-color: var(--border-black) !important;
}
```