diff --git a/themes/beautifulhugo/static/css/main.css b/themes/beautifulhugo/static/css/main.css
index 7f30a3f..126a156 100644
--- a/themes/beautifulhugo/static/css/main.css
+++ b/themes/beautifulhugo/static/css/main.css
@@ -1,110 +1,89 @@
 /* --- General --- */
 
 body {
-  font-family: 'Lora', 'Times New Roman', serif;
-  font-size: 18px;
-  color: #404040;
-  position: relative;
-  background: #FFF;
-  display: flex;
-  flex-flow: column;
-  height: 100vh;
-}
-@media (prefers-color-scheme: dark) {
-  body {
-    background: black;
-    color: white;
-  }
+    font-family: 'Lora', 'Times New Roman', serif;
+    font-size: 18px;
+    color: #404040;
+    position: relative;
+    background: #FFF;
+    display: flex;
+    flex-flow: column;
+    height: 100vh;
 }
 .container[role=main] {
-  margin-bottom:50px;
-  flex: 1 0 auto;
+    margin-bottom:50px;
+    flex: 1 0 auto;
 }
 
 @media only screen and (max-width: 767px) {
-.container[role=main] {
-    margin-left: 0;
-    margin-right: 0;
-}
+    .container[role=main] {
+        margin-left: 0;
+        margin-right: 0;
+    }
 }
 
 p {
-  line-height: 1.5;
-  margin: 6px 0;
+    line-height: 1.5;
+    margin: 6px 0;
 }
 p + p {
     margin: 24px 0 6px 0;
 }
 p a {
-  /* text-decoration: underline */
-  color: #008AFF;
-}
-@media (prefers-color-scheme: dark) {
-  p a {
-    color: #50afff;
-  }
+    /* text-decoration: underline */
+    color: #008AFF;
 }
 
 h1,h2,h3,h4,h5,h6 {
-  font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
-  font-weight: 800;
+    font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
+    font-weight: 800;
 }
 a {
-  color: #008AFF;
-}
-@media (prefers-color-scheme: dark) {
-  a {
-    color: #50afff;
-  }
+    color: #008AFF;
 }
 a:hover,
 a:focus {
-  color: #0085a1;
+    color: #0085a1;
 }
 blockquote {
-  color: #808080;
-  font-style: italic;
+    color: #808080;
+    font-style: italic;
 }
 blockquote p:first-child {
-  margin-top: 0;
-}
-@media (prefers-color-scheme: dark) {
-  blockquote {
-    border-left: 5px solid #444;
-  }
+    margin-top: 0;
 }
 hr.small {
-  max-width: 100px;
-  margin: 15px auto;
-  border-width: 4px;
-  border-color: inherit;
-  border-radius: 3px;
+    max-width: 100px;
+    margin: 15px auto;
+    border-width: 4px;
+    border-color: inherit;
+    border-radius: 3px;
 }
 
 .main-content {
-  padding-top: 80px;
+    padding-top: 80px;
 }
 @media only screen and (min-width: 768px) {
-  .main-content {
-    padding-top: 130px;
-  }
+    .main-content {
+        padding-top: 130px;
+    }
 }
 
 .main-explain-area {
-  font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
-  padding: 15px inherit;
+    font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
+    padding: 15px inherit;
 }
 
 .hideme {
-  display: none;
+    display: none;
 }
 
 div.panel-body a.list-group-item {
-  font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
-  font-weight: 800;
-  border-radius: 0;
-  border: none;
-  font-size: 16px;
+    font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
+    font-weight: 800;
+    border-radius: 0;
+    border: none;
+    font-size: 16px;
 }
 div.panel-group .panel {
     border-radius: 0;
@@ -114,629 +93,575 @@ div.panel-group .panel+.panel {
 }
 
 div.panel-body a.list-group-item.view-all {
-  font-weight: 600;
+    font-weight: 600;
 }
 
 ::-moz-selection, ::selection {
-  color: white;
-  text-shadow: none;
-  background: #0085a1;
+    color: white;
+    text-shadow: none;
+    background: #0085a1;
 }
 img::selection, img::-moz-selection {
-  color: white;
-  background: transparent;
+    color: white;
+    background: transparent;
 }
 
 
 img {
-  display: block;
-  margin: auto;
-  max-width: 100%;
-}
-@media (prefers-color-scheme: dark) {
-figure:not(.dark) img, img.white {
-  background-color: white;
-}
+    display: block;
+    margin: auto;
+    max-width: 100%;
 }
 
 .img-title {
-  width: 100%;
+    width: 100%;
 }
 
 .disqus-comments {
-  margin-top: 30px;
+    margin-top: 30px;
 }
 
 @media only screen and (min-width: 768px) {
-  .disqus-comments {
-    margin-top: 40px;
-  }
+    .disqus-comments {
+        margin-top: 40px;
+    }
 }
 
 /* --- Navbar --- */
 
 .navbar-custom {
-  background: #F5F5F5;
-  border-bottom: 1px solid #EAEAEA;
-  font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
-}
-@media (prefers-color-scheme: dark) {
-  .navbar-custom {
-    background: #505050;
-    border-bottom: 1px solid #AAA;
-  }
+    background: #F5F5F5;
+    border-bottom: 1px solid #EAEAEA;
+    font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
 }
 
 .navbar-custom .nav li a {
-  text-transform: uppercase;
-  font-size: 12px;
-  letter-spacing: 1px;
+    text-transform: uppercase;
+    font-size: 12px;
+    letter-spacing: 1px;
 }
 
 .navbar-custom .navbar-brand,
 .navbar-custom .nav li a {
-  font-weight: 800;
-  color: #404040;
-}
-
-@media (prefers-color-scheme: dark) {
-  .navbar-custom .navbar-brand,
-  .navbar-custom .nav li a {
-    color: #b0b0b0;
-  }
+    font-weight: 800;
+    color: #404040;
 }
 
 .navbar-custom .navbar-brand:hover,
 .navbar-custom .navbar-brand:focus ,
 .navbar-custom .nav li a:hover,
 .navbar-custom .nav li a:focus {
-  color: #0085a1;
+    color: #0085a1;
 }
 
 .navbar-custom .navbar-brand:hover,
 .navbar-custom .navbar-brand:focus ,
 .navbar-custom .nav li a:hover,
 .navbar-custom .nav li a:focus {
-  @media (prefers-color-scheme: dark) {
-    color: #b0e0ff;
-  }
 }
 
 .navbar-custom .navbar-brand-logo {
-  padding-top: 0;
-  -webkit-transition: padding .5s ease-in-out;
-  -moz-transition: padding .5s ease-in-out;
-  transition: padding .5s ease-in-out;
+    padding-top: 0;
+    -webkit-transition: padding .5s ease-in-out;
+    -moz-transition: padding .5s ease-in-out;
+    transition: padding .5s ease-in-out;
 }
 .navbar-custom .navbar-brand-logo img {
-  height: 50px;
-  -webkit-transition: height .5s ease-in-out;
-  -moz-transition: height .5s ease-in-out;
-  transition: height .5s ease-in-out;
+    height: 50px;
+    -webkit-transition: height .5s ease-in-out;
+    -moz-transition: height .5s ease-in-out;
+    transition: height .5s ease-in-out;
 }
 .navbar-custom.top-nav-short .navbar-brand-logo {
-  padding-top: 5px;
+    padding-top: 5px;
 }
 .navbar-custom.top-nav-short .navbar-brand-logo img {
-  height: 40px;
+    height: 40px;
 }
 
 @media only screen and (min-width: 768px) {
-  .navbar-custom {
-    padding: 20px 0;
-    -webkit-transition: background .5s ease-in-out,padding .5s ease-in-out;
-    -moz-transition: background .5s ease-in-out,padding .5s ease-in-out;
-    transition: background .5s ease-in-out,padding .5s ease-in-out;
-  }
+    .navbar-custom {
+        padding: 20px 0;
+        -webkit-transition: background .5s ease-in-out,padding .5s ease-in-out;
+        -moz-transition: background .5s ease-in-out,padding .5s ease-in-out;
+        transition: background .5s ease-in-out,padding .5s ease-in-out;
+    }
 
-  .navbar-custom.top-nav-short {
-    padding: 0;
-  }
+    .navbar-custom.top-nav-short {
+        padding: 0;
+    }
 }
 
 .navbar-custom .avatar-container {
-  opacity: 1;
-  visibility: visible;
-  position: absolute;
-  -webkit-transition: visibility 0.5s, opacity 0.5s ease-in-out;
-  -moz-transition: visibility 0.5s, opacity 0.5s ease-in-out;
-  transition: visibility 0.5s, opacity 0.5s ease-in-out;
-  left: 50%;
-  width: 50px;
-  margin-top: -25px;
+    opacity: 1;
+    visibility: visible;
+    position: absolute;
+    -webkit-transition: visibility 0.5s, opacity 0.5s ease-in-out;
+    -moz-transition: visibility 0.5s, opacity 0.5s ease-in-out;
+    transition: visibility 0.5s, opacity 0.5s ease-in-out;
+    left: 50%;
+    width: 50px;
+    margin-top: -25px;
 }
 .navbar-custom .avatar-container  .avatar-img-border {
-  width: 100%;
-  border-radius: 50%;
-  margin-left: -50%;
-  display: inline-block;
-  box-shadow: 0 0 8px rgba(0, 0, 0, .8);
-  -webkit-box-shadow: 0 0 5px rgba(0, 0, 0, .8);
-  -moz-box-shadow: 0 0 8px rgba(0, 0, 0, .8);
+    width: 100%;
+    border-radius: 50%;
+    margin-left: -50%;
+    display: inline-block;
+    box-shadow: 0 0 8px rgba(0, 0, 0, .8);
+    -webkit-box-shadow: 0 0 5px rgba(0, 0, 0, .8);
+    -moz-box-shadow: 0 0 8px rgba(0, 0, 0, .8);
 }
 .navbar-custom .avatar-container  .avatar-img {
-  width: 100%;
-  border-radius: 50%;
-  display: block;
+    width: 100%;
+    border-radius: 50%;
+    display: block;
 }
 
 .navbar-custom.top-nav-short .avatar-container{
-  opacity: 0;
-  visibility: hidden;
+    opacity: 0;
+    visibility: hidden;
 }
 
 .navbar-custom.top-nav-expanded .avatar-container  {
-  display: none;
+    display: none;
 }
 
 @media only screen and (min-width: 768px) {
-  .navbar-custom .avatar-container {
-    width: 100px;
-    margin-top: -50px;
-  }
+    .navbar-custom .avatar-container {
+        width: 100px;
+        margin-top: -50px;
+    }
 
-  .navbar-custom .avatar-container  .avatar-img-border {
-    width: 100%;
-    box-shadow: 1px 1px 2px rgba(0, 0, 0, .8);
-    -webkit-box-shadow: 1px 1px 2px rgba(0, 0, 0, .8);
-    -moz-box-shadow: 1px 1px 2px rgba(0, 0, 0, .8);
-  }
+    .navbar-custom .avatar-container  .avatar-img-border {
+        width: 100%;
+        box-shadow: 1px 1px 2px rgba(0, 0, 0, .8);
+        -webkit-box-shadow: 1px 1px 2px rgba(0, 0, 0, .8);
+        -moz-box-shadow: 1px 1px 2px rgba(0, 0, 0, .8);
+    }
 
-  .navbar-custom .avatar-container  .avatar-img {
-    width: 100%;
-  }
+    .navbar-custom .avatar-container  .avatar-img {
+        width: 100%;
+    }
 }
 
 /* Multi-level navigation links */
 .navbar-custom .nav .navlinks-container {
-  position: relative;
+    position: relative;
 }
 .navbar-custom .nav .navlinks-parent:after {
-  content: " \25BC";
+    content: " \25BC";
 }
 .navbar-custom .nav .navlinks-children {
-  width: 100%;
-  display: none;
-  word-break: break-word;
+    width: 100%;
+    display: none;
+    word-break: break-word;
 }
 .navbar-custom .nav .navlinks-container .navlinks-children a {
-  display: block;
-  padding: 10px;
-  padding-left: 30px;
-  background: #f5f5f5;
-  text-decoration: none !important;
-  border-width: 0 1px 1px 1px;
-  font-weight: normal;
+    display: block;
+    padding: 10px;
+    padding-left: 30px;
+    background: #f5f5f5;
+    text-decoration: none !important;
+    border-width: 0 1px 1px 1px;
+    font-weight: normal;
 }
 @media only screen and (max-width: 767px) {
-  .navbar-custom .nav .navlinks-container.show-children {
-    background: #eee;
-  }
-  .navbar-custom .nav .navlinks-container.show-children .navlinks-children {
-    display: block;
-  }
+    .navbar-custom .nav .navlinks-container.show-children {
+        background: #eee;
+    }
+    .navbar-custom .nav .navlinks-container.show-children .navlinks-children {
+        display: block;
+    }
 }
 @media only screen and (min-width: 768px) {
-  .navbar-custom .nav .navlinks-container {
-    text-align: center;
-  }
-  .navbar-custom .nav .navlinks-container:hover {
-    background: #eee;
-  }
-  .navbar-custom .nav .navlinks-container:hover .navlinks-children {
-    display: block;
-  }
-  .navbar-custom .nav .navlinks-children {
-    position: absolute;
-  }
-  .navbar-custom .nav .navlinks-container .navlinks-children a {
-    padding-left: 10px;
-    border: 1px solid #eaeaea;
-    border-width: 0 1px 1px;
-  }
-}
-@media (prefers-color-scheme: dark) {
-  .navbar-custom .nav .navlinks-container:hover {
-    background: #666;
-  }
-  .navbar-custom .nav .navlinks-container .navlinks-children a {
-    border: 1px solid #AAA;
-  }
-  .navbar-custom .nav .navlinks-container .navlinks-children a {
-    background: #444;
-  }
+    .navbar-custom .nav .navlinks-container {
+        text-align: center;
+    }
+    .navbar-custom .nav .navlinks-container:hover {
+        background: #eee;
+    }
+    .navbar-custom .nav .navlinks-container:hover .navlinks-children {
+        display: block;
+    }
+    .navbar-custom .nav .navlinks-children {
+        position: absolute;
+    }
+    .navbar-custom .nav .navlinks-container .navlinks-children a {
+        padding-left: 10px;
+        border: 1px solid #eaeaea;
+        border-width: 0 1px 1px;
+    }
 }
 
 /* --- Footer --- */
 
 footer {
-  padding: 30px 0;
-  background: #F5F5F5;
-  border-top: 1px #EAEAEA solid;
-  margin-top: auto;
-  font-size: 14px;
+    padding: 30px 0;
+    background: #F5F5F5;
+    border-top: 1px #EAEAEA solid;
+    margin-top: auto;
+    font-size: 14px;
 }
 
 footer a {
-  color: #404040;
+    color: #404040;
 
 }
 
 footer .list-inline {
-  margin: 0;
-  padding: 0;
+    margin: 0;
+    padding: 0;
 }
 footer .copyright {
-  font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
-  text-align: center;
-  margin-bottom: 0;
+    font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
+    text-align: center;
+    margin-bottom: 0;
 }
 footer .theme-by {
-  text-align: center;
-  margin: 10px 0 0;
+    text-align: center;
+    margin: 10px 0 0;
 }
 
 @media only screen and (min-width: 768px) {
-  footer {
-    padding: 50px 0;
-  }
-  footer .footer-links {
-    font-size: 18px;
-  }
-  footer .copyright {
-    font-size: 16px;
-  }
-}
-
-@media (prefers-color-scheme: dark) {
-  footer {
-    background: #444;
-    border-top: 1px #AAA solid;
-  }
-  footer a {
-    color: #AAA;
-  }
+    footer {
+        padding: 50px 0;
+    }
+    footer .footer-links {
+        font-size: 18px;
+    }
+    footer .copyright {
+        font-size: 16px;
+    }
 }
 
 /* --- Post preview --- */
 
 .post-preview {
-  padding: 20px 0;
-  border-bottom: 1px solid #eee;
+    padding: 20px 0;
+    border-bottom: 1px solid #eee;
 }
 @media only screen and (min-width: 768px) {
-  .post-preview {
-    padding: 35px 0;
-  }
+    .post-preview {
+        padding: 35px 0;
+    }
 }
 
 .post-preview:last-child {
-  border-bottom: 0;
+    border-bottom: 0;
 }
 
 .post-preview a {
-  text-decoration: none;
-  color: #404040;
+    text-decoration: none;
+    color: #404040;
 }
-@media (prefers-color-scheme: dark) {
-  .post-preview a {
-    color: #AAA;
-  }
-}
-
 .post-preview a:focus,
 .post-preview a:hover {
-  text-decoration: none;
-  color: #0085a1;
+    text-decoration: none;
+    color: #0085a1;
 }
 
 .post-preview .post-title {
-  font-size: 30px;
-  margin-top: 0;
+    font-size: 30px;
+    margin-top: 0;
 }
 .post-preview .post-subtitle {
-  margin: 0;
-  font-weight: 300;
-  margin-bottom: 10px;
+    margin: 0;
+    font-weight: 300;
+    margin-bottom: 10px;
 }
 .post-preview .post-meta,
 .post-heading .post-meta,
 .page-meta {
-  color: #808080;
-  font-size: 18px;
-  font-style: italic;
-  margin: 0 0 10px;
+    color: #808080;
+    font-size: 18px;
+    font-style: italic;
+    margin: 0 0 10px;
 }
 .page-meta {
-  align-self: center;
+    align-self: center;
 }
 .post-preview .post-meta a,
 .post-heading .post-meta a,
 .page-meta a {
-  color: #404040;
-  text-decoration: none;
+    color: #404040;
+    text-decoration: none;
 }
 .post-preview .post-entry {
-  font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
+    font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
 }
 .post-entry-container {
-  display: inline-block;
-  width: 100%;
+    display: inline-block;
+    width: 100%;
 }
 .post-entry {
-  width: 100%;
-  margin-top: 10px;
+    width: 100%;
+    margin-top: 10px;
 }
 .post-image {
-  float: right;
-  height: 192px;
-  width: 192px;
-  margin-top: -35px;
-  filter: grayscale(90%);
+    float: right;
+    height: 192px;
+    width: 192px;
+    margin-top: -35px;
+    filter: grayscale(90%);
 }
 .post-image:hover {
-  filter: grayscale(0%);
+    filter: grayscale(0%);
 }
 .post-image img {
-  border-radius: 100px;
-  height: 192px;
-  width: 192px;
+    border-radius: 100px;
+    height: 192px;
+    width: 192px;
 }
 .post-preview .post-read-more {
-  font-weight: 800;
-  float: right;
+    font-weight: 800;
+    float: right;
 }
 
 @media only screen and (min-width: 768px) {
-  .post-preview .post-title {
-    font-size: 36px;
-  }
+    .post-preview .post-title {
+        font-size: 36px;
+    }
 }
 
 /* --- Tags --- */
 
 .blog-tags {
-  font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
-  color: #999;
-  font-size: 15px;
-  margin-bottom: 30px;
+    font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
+    color: #999;
+    font-size: 15px;
+    margin-bottom: 30px;
 }
 
 .blog-tags:before {
-  content: "Tags: ";
+    content: "Tags: ";
 }
 
 .blog-tags a {
-  color: #008AFF;
-  text-decoration: none;
-  padding: 0px 5px;
+    color: #008AFF;
+    text-decoration: none;
+    padding: 0px 5px;
 }
 
 .blog-tags a:before {
-  content: "#";
+    content: "#";
 }
 
 .blog-tags a:hover {
-  border-radius: 2px;
-  color: #008AFF;
-  background-color: #CCC;
+    border-radius: 2px;
+    color: #008AFF;
+    background-color: #CCC;
 }
 
 .post-preview .blog-tags {
-  margin-top: 5px;
-  margin-bottom: 0;
+    margin-top: 5px;
+    margin-bottom: 0;
 }
 
 @media only screen and (min-width: 768px) {
-  .post-preview .blog-tags {
-    margin-top: 10px;
-  }
+    .post-preview .blog-tags {
+        margin-top: 10px;
+    }
 }
 
 @media only screen and (max-width: 500px) {
-  .post-image, .post-image img {
-    height: 100px;
-    width: 100px;
-  }
+    .post-image, .post-image img {
+        height: 100px;
+        width: 100px;
+    }
 
-  .post-image {
-    width: 100%;
-    text-align: center;
-    margin-top: 0;
-    float: left;
-  }
+    .post-image {
+        width: 100%;
+        text-align: center;
+        margin-top: 0;
+        float: left;
+    }
 }
 /* --- Post and page headers --- */
 
 .intro-header {
-  margin: 80px 0 20px;
-  position: relative;
+    margin: 80px 0 20px;
+    position: relative;
 }
 .intro-header.big-img {
-  background: no-repeat center center;
-  -webkit-background-size: cover;
-  -moz-background-size: cover;
-  background-size: cover;
-  -o-background-size: cover;
-  margin-top: 51px; /* The small navbar is 50px tall + 1px border */
-  margin-bottom: 35px;
+    background: no-repeat center center;
+    -webkit-background-size: cover;
+    -moz-background-size: cover;
+    background-size: cover;
+    -o-background-size: cover;
+    margin-top: 51px; /* The small navbar is 50px tall + 1px border */
+    margin-bottom: 35px;
 }
 .intro-header.big-img  .big-img-transition {
-  position: absolute;
-  width: 100%;
-  height: 100%;
-  opacity: 0;
-  background: no-repeat center center;
-  -webkit-background-size: cover;
-  -moz-background-size: cover;
-  background-size: cover;
-  -o-background-size: cover;
-  -webkit-transition: opacity 1s linear;
-  -moz-transition: opacity 1s linear;
-  transition: opacity 1s linear;
+    position: absolute;
+    width: 100%;
+    height: 100%;
+    opacity: 0;
+    background: no-repeat center center;
+    -webkit-background-size: cover;
+    -moz-background-size: cover;
+    background-size: cover;
+    -o-background-size: cover;
+    -webkit-transition: opacity 1s linear;
+    -moz-transition: opacity 1s linear;
+    transition: opacity 1s linear;
 }
 .intro-header .page-heading,
 .intro-header .tags-heading,
 .intro-header .categories-heading {
-  text-align: center;
+    text-align: center;
 }
 .intro-header.big-img .page-heading,
 .intro-header.big-img .post-heading {
-  padding: 100px 0;
-  color: #FFF;
-  text-shadow: 1px 1px 3px #000;
+    padding: 100px 0;
+    color: #FFF;
+    text-shadow: 1px 1px 3px #000;
 }
 .intro-header .page-heading h1,
 .intro-header .tags-heading h1,
 .intro-header .categories-heading h1 {
-  margin-top: 0;
-  font-size: 50px;
+    margin-top: 0;
+    font-size: 50px;
 }
 .intro-header .post-heading h1 {
-  margin-top: 0;
-  font-size: 35px;
+    margin-top: 0;
+    font-size: 35px;
 }
 .intro-header .page-heading .page-subheading,
 .intro-header .post-heading .post-subheading {
-  font-size: 27px;
-  line-height: 1.1;
-  display: block;
-  font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
-  font-weight: 300;
-  margin: 10px 0 0;
+    font-size: 27px;
+    line-height: 1.1;
+    display: block;
+    font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
+    font-weight: 300;
+    margin: 10px 0 0;
 }
 .intro-header .post-heading .post-subheading {
-  margin-bottom: 20px;
+    margin-bottom: 20px;
 }
 .intro-header.big-img .page-heading .page-subheading,
 .intro-header.big-img .post-heading .post-subheading {
-  font-weight: 400;
+    font-weight: 400;
 }
 .intro-header.big-img .page-heading hr {
-  box-shadow: 1px 1px 3px #000;
-  -webkit-box-shadow: 1px 1px 3px #000;
-  -moz-box-shadow: 1px 1px 3px #000;
+    box-shadow: 1px 1px 3px #000;
+    -webkit-box-shadow: 1px 1px 3px #000;
+    -moz-box-shadow: 1px 1px 3px #000;
 }
 .intro-header.big-img .post-heading .post-meta {
-  color: #EEE;
+    color: #EEE;
 }
 .intro-header.big-img .img-desc {
-  background: rgba(30, 30, 30, 0.6);
-  position: absolute;
-  padding: 5px 10px;
-  font-size: 11px;
-  color: #EEE;
-  font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
-  right: 0;
-  bottom: 0;
-  display: none;
+    background: rgba(30, 30, 30, 0.6);
+    position: absolute;
+    padding: 5px 10px;
+    font-size: 11px;
+    color: #EEE;
+    font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
+    right: 0;
+    bottom: 0;
+    display: none;
 }
 @media only screen and (min-width: 768px) {
-  .intro-header {
-    margin-top: 130px;
-  }
-  .intro-header.big-img {
-    margin-top: 91px;  /* Full navbar is small navbar + 20px padding on each side when expanded */
-  }
-  .intro-header.big-img .page-heading,
-  .intro-header.big-img .post-heading  {
-    padding: 150px 0;
-  }
-  .intro-header .page-heading h1,
-  .intro-header .tags-heading h1,
-  .intro-header .categories-heading h1 {
-    font-size: 80px;
-  }
-  .intro-header .post-heading h1 {
-    font-size: 50px;
-  }
-  .intro-header.big-img .img-desc {
-    font-size: 14px;
-  }
+    .intro-header {
+        margin-top: 130px;
+    }
+    .intro-header.big-img {
+        margin-top: 91px;  /* Full navbar is small navbar + 20px padding on each side when expanded */
+    }
+    .intro-header.big-img .page-heading,
+    .intro-header.big-img .post-heading  {
+        padding: 150px 0;
+    }
+    .intro-header .page-heading h1,
+    .intro-header .tags-heading h1,
+    .intro-header .categories-heading h1 {
+        font-size: 80px;
+    }
+    .intro-header .post-heading h1 {
+        font-size: 50px;
+    }
+    .intro-header.big-img .img-desc {
+        font-size: 14px;
+    }
 }
 
 .header-section.has-img .no-img {
-  margin-top: 0;
-  background: #FCFCFC;
-  margin: 0 0 40px;
-  padding: 20px 0;
-  box-shadow: 0 0 5px #AAA;
+    margin-top: 0;
+    background: #FCFCFC;
+    margin: 0 0 40px;
+    padding: 20px 0;
+    box-shadow: 0 0 5px #AAA;
 }
 /* Many phones are 320 or 360px, so make sure images are a proper aspect ratio in those cases */
 .header-section.has-img .intro-header.no-img {
-  display: none;
+    display: none;
 }
 @media only screen and (max-width: 365px) {
-  .header-section.has-img .intro-header.no-img {
-    display: block;
-  }
-  .intro-header.big-img {
-    width: 100%;
-    height: 220px;
-  }
-  .intro-header.big-img .page-heading,
-  .intro-header.big-img .post-heading {
-    display: none;
-  }
-  .header-section.has-img .big-img {
-    margin-bottom: 0;
-  }
+    .header-section.has-img .intro-header.no-img {
+        display: block;
+    }
+    .intro-header.big-img {
+        width: 100%;
+        height: 220px;
+    }
+    .intro-header.big-img .page-heading,
+    .intro-header.big-img .post-heading {
+        display: none;
+    }
+    .header-section.has-img .big-img {
+        margin-bottom: 0;
+    }
 }
 @media only screen and (max-width: 325px) {
-  .intro-header.big-img {
-    height: 200px;
-  }
+    .intro-header.big-img {
+        height: 200px;
+    }
 }
 
 .caption {
-  text-align: center;
-  font-size: 14px;
-  padding: 10px;
-  font-style: italic;
-  margin: 0;
-  display: block;
-  border-bottom-right-radius: 5px;
-  border-bottom-left-radius: 5px;
+    text-align: center;
+    font-size: 14px;
+    padding: 10px;
+    font-style: italic;
+    margin: 0;
+    display: block;
+    border-bottom-right-radius: 5px;
+    border-bottom-left-radius: 5px;
 }
 
 /* --- Pager --- */
 
 .pager li a {
-  font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
-  text-transform: uppercase;
-  font-size: 14px;
-  font-weight: 800;
-  letter-spacing: 1px;
-  padding: 10px 5px;
-  background: #FFF;
-  border-radius: 0;
-  color: #404040;
+    font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
+    text-transform: uppercase;
+    font-size: 14px;
+    font-weight: 800;
+    letter-spacing: 1px;
+    padding: 10px 5px;
+    background: #FFF;
+    border-radius: 0;
+    color: #404040;
 }
 @media only screen and (min-width: 768px) {
-  .pager li a {
-    padding: 15px 25px;
-  }
+    .pager li a {
+        padding: 15px 25px;
+    }
 }
 .pager li a:hover,
 .pager li a:focus {
-  color: #FFF;
-  background: #0085a1;
-  border: 1px solid #0085a1;
+    color: #FFF;
+    background: #0085a1;
+    border: 1px solid #0085a1;
 }
 
-@media (prefers-color-scheme: dark) {
-.pager li a {
-  background: #444;
-  color: white;
-}
-}
 
 .pager {
-  margin: 10px 0 0;
+    margin: 10px 0 0;
 }
 
 .pager.blog-pager {
-  margin-top:10px;
+    margin-top:10px;
 }
 
 h4.panel-title > span.badge {
@@ -744,198 +669,149 @@ h4.panel-title > span.badge {
 }
 
 @media only screen and (min-width: 768px) {
-  .pager.blog-pager  {
-    margin-top: 40px;
-  }
+    .pager.blog-pager  {
+        margin-top: 40px;
+    }
 }
 
 /* --- Tables --- */
 
 table {
-  padding: 0;
+    padding: 0;
 }
 table tr {
-  border-top: 1px solid #cccccc;
-  background-color: #ffffff;
-  margin: 0;
-  padding: 0;
-}
-@media (prefers-color-scheme: dark) {
+    border-top: 1px solid #cccccc;
+    background-color: #ffffff;
+    margin: 0;
+    padding: 0;
 }
 table tr:nth-child(2n) {
-  background-color: #f8f8f8;
-}
-@media (prefers-color-scheme: dark) {
-table tr {
-  background-color: #181818;
-}
-table tr:nth-child(2n) {
-  background-color: #303030
-}
+    background-color: #f8f8f8;
 }
 table tr th {
-  font-weight: bold;
-  border: 1px solid #cccccc;
-  text-align: left;
-  margin: 0;
-  padding: 6px 13px;
+    font-weight: bold;
+    border: 1px solid #cccccc;
+    text-align: left;
+    margin: 0;
+    padding: 6px 13px;
 }
 table tr td {
-  border: 1px solid #cccccc;
-  text-align: left;
-  margin: 0;
-  padding: 6px 13px;
+    border: 1px solid #cccccc;
+    text-align: left;
+    margin: 0;
+    padding: 6px 13px;
 }
 table tr th :first-child,
 table tr td :first-child {
-  margin-top: 0;
+    margin-top: 0;
 }
 table tr th :last-child,
 table tr td :last-child {
-  margin-bottom: 0;
+    margin-bottom: 0;
 }
 
 /* --- Social media sharing section --- */
 
 #social-share-section {
-  margin-bottom: 30px;
+    margin-bottom: 30px;
 }
 
 /* --- Google Custom Search Engine Popup --- */
 #modalSearch table tr, #modalSearch table tr td, #modalSearch table tr th {
-  border:none;
+    border:none;
 }
 .reset-box-sizing, .reset-box-sizing *, .reset-box-sizing *:before, .reset-box-sizing *:after,  .gsc-inline-block {
-  -webkit-box-sizing: content-box;
-  -moz-box-sizing: content-box;
-  box-sizing: content-box;
+    -webkit-box-sizing: content-box;
+    -moz-box-sizing: content-box;
+    box-sizing: content-box;
 }
 input.gsc-input, .gsc-input-box, .gsc-input-box-hover, .gsc-input-box-focus, .gsc-search-button {
-  box-sizing: content-box;
-  line-height: normal;
+    box-sizing: content-box;
+    line-height: normal;
 }
 
 /* IPython split style */
 div.splitbox {width:100%; overflow:auto;}
 
 div.splitbox div.left {
-               width:48%;
-               float:left;}
+    width:48%;
+float:left;}
 div.splitbox div.right {
-               width:48%;
-               float:right;}
+    width:48%;
+float:right;}
 
 @media only screen and (max-width: 600px) {
-div.splitbox div.left {
-               width:100%;
-               float:left;}
-div.splitbox div.right {
-               width:100%;
-               float:left;}
+    div.splitbox div.left {
+        width:100%;
+    float:left;}
+    div.splitbox div.right {
+        width:100%;
+    float:left;}
 }
 
 /* Delayed Disqus */
 .disqus-comments button {
-  font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
-  text-transform: uppercase;
-  font-size: 14px;
-  font-weight: 800;
-  letter-spacing: 1px;
-  padding: 10px 5px;
-  background: #FFF;
-  border-radius: 0;
-  color: #404040;
+    font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
+    text-transform: uppercase;
+    font-size: 14px;
+    font-weight: 800;
+    letter-spacing: 1px;
+    padding: 10px 5px;
+    background: #FFF;
+    border-radius: 0;
+    color: #404040;
 }
 @media only screen and (min-width: 768px) {
-  .disqus-comments button {
-    padding: 15px 25px;
-  }
+    .disqus-comments button {
+        padding: 15px 25px;
+    }
 }
-.disqus-comments button:hover, 
+.disqus-comments button:hover,
 .disqus-comments button:focus {
-  color: #FFF;
-  background: #0085a1;
-  border: 1px solid #0085a1;
+    color: #FFF;
+    background: #0085a1;
+    border: 1px solid #0085a1;
 }
 
 /* Related posts */
 h4.see-also {
-  margin-top: 20px;
+    margin-top: 20px;
 }
 
 /* Sharing */
- ul.share {
-  display: flex;
-  flex-direction: row;
-  flex-wrap: wrap;
-  list-style: none;
-  margin: 0;
-  padding: 0;
+ul.share {
+    display: flex;
+    flex-direction: row;
+    flex-wrap: wrap;
+    list-style: none;
+    margin: 0;
+    padding: 0;
 }
- ul.share li {
-  display: inline-flex;
-  margin-right: 5px;
+ul.share li {
+    display: inline-flex;
+    margin-right: 5px;
 }
- ul.share li:last-of-type {
-  margin-right: 0;
+ul.share li:last-of-type {
+    margin-right: 0;
 }
- ul.share li .fab {
-  display: block;
-  width: 30px;
-  height: 30px;
-  line-height: 30px;
-  font-size: 16px;
-  text-align: center;
-  transition: all 150ms ease-in-out;
-  color: #fff;
+ul.share li .fab {
+    display: block;
+    width: 30px;
+    height: 30px;
+    line-height: 30px;
+    font-size: 16px;
+    text-align: center;
+    transition: all 150ms ease-in-out;
+    color: #fff;
 }
- ul.share li a {
-  background-color: #b5c6ce;
-  display: block;
-  border-radius: 50%;
-  text-decoration: none !important;
-  margin: 0;
+ul.share li a {
+    background-color: #b5c6ce;
+    display: block;
+    border-radius: 50%;
+    text-decoration: none !important;
+    margin: 0;
 }
- ul.share li:hover .fab {
-  transform: scale(1.4)
+ul.share li:hover .fab {
+    transform: scale(1.4)
 }
 
-/* Dark mode */
-@media (prefers-color-scheme: dark) {
-  code {
-    background-color: #222;
-    color: #fbb;
-  }
-  pre code {
-    color: #ccc;
-  }
-  .well {
-    background-color: #444;
-  }
-  .panel {
-    background-color: #222;
-  }
-  .list-group-item {
-    background-color: #333;
-  }
-
-  pre.chroma {
-    color: white;
-    background-color: #444;
-  }
-  pre.chroma .k {
-    color: #44AACC;
-  }
-  pre.chroma .kt {
-    color: #33CCCC;
-  }
-  pre.chroma .o {
-    color: #AAA;
-  }
-  pre.chroma .nb {
-    color: #00fee9;
-  }
-  pre.chroma .ow {
-    color: #CC0;
-  }
-}