onec.me/themes/beautifulhugo/static/css/main.css

/* --- 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;
  }
}
.container[role=main] {
  margin-bottom:50px;
  flex: 1 0 auto;
}

@media only screen and (max-width: 767px) {
.container[role=main] {
    margin-left: 0;
    margin-right: 0;
}
}

p {
  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;
  }
}

h1,h2,h3,h4,h5,h6 {
  font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-weight: 800;
}
a {
  color: #008AFF;
}
@media (prefers-color-scheme: dark) {
  a {
    color: #50afff;
  }
}
a:hover,
a:focus {
  color: #0085a1;
}
blockquote {
  color: #808080;
  font-style: italic;
}
blockquote p:first-child {
  margin-top: 0;
}
@media (prefers-color-scheme: dark) {
  blockquote {
    border-left: 5px solid #444;
  }
}
hr.small {
  max-width: 100px;
  margin: 15px auto;
  border-width: 4px;
  border-color: inherit;
  border-radius: 3px;
}

.main-content {
  padding-top: 80px;
}
@media only screen and (min-width: 768px) {
  .main-content {
    padding-top: 130px;
  }
}

.main-explain-area {
  font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  padding: 15px inherit;
}

.hideme {
  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;
}
div.panel-group .panel {
    border-radius: 0;
}
div.panel-group .panel+.panel {
    margin-top: 0;
}

div.panel-body a.list-group-item.view-all {
  font-weight: 600;
}

::-moz-selection, ::selection {
  color: white;
  text-shadow: none;
  background: #0085a1;
}
img::selection, img::-moz-selection {
  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;
}
}

.img-title {
  width: 100%;
}

.disqus-comments {
  margin-top: 30px;
}

@media only screen and (min-width: 768px) {
  .disqus-comments {
    margin-top: 40px;
  }
}

#cusdis_thread {
  margin-top: 30px;
}

/* --- 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;
  }
}

.navbar-custom .nav li a {
  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;
  }
}

.navbar-custom .navbar-brand:hover,
.navbar-custom .navbar-brand:focus ,
.navbar-custom .nav li a:hover,
.navbar-custom .nav li a:focus {
  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;
}
.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;
}
.navbar-custom.top-nav-short .navbar-brand-logo {
  padding-top: 5px;
}
.navbar-custom.top-nav-short .navbar-brand-logo img {
  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.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;
}
.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);
}
.navbar-custom .avatar-container  .avatar-img {
  width: 100%;
  border-radius: 50%;
  display: block;
}

.navbar-custom.top-nav-short .avatar-container{
  opacity: 0;
  visibility: hidden;
}

.navbar-custom.top-nav-expanded .avatar-container  {
  display: none;
}

@media only screen and (min-width: 768px) {
  .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 {
    width: 100%;
  }
}

/* Multi-level navigation links */
.navbar-custom .nav .navlinks-container {
  position: relative;
}
.navbar-custom .nav .navlinks-parent:after {
  content: " \25BC";
}
.navbar-custom .nav .navlinks-children {
  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;
}
@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;
  }
}
@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;
  }
}

/* --- Footer --- */

footer {
  padding: 30px 0;
  background: #F5F5F5;
  border-top: 1px #EAEAEA solid;
  margin-top: auto;
  font-size: 14px;
}

footer a {
  color: #404040;

}

footer .list-inline {
  margin: 0;
  padding: 0;
}
footer .copyright {
  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;
}

footer div.disclaimer {
  padding: 15px 15px 15px 10px;
  margin: 20px 20px 20px 5px;
  border: 1px solid #eee;
  border-left-width: 10px;
  border-right-width: 10px;
  border-radius: 5px 3px 3px 5px;
  background-color: #fdf5d4;
  border-left-color: #f1c40f;
  border-right-color: #f1c40f;
  font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  text-align: center;
}

@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;
  }
}

/* --- Post preview --- */

.post-preview {
  padding: 20px 0;
  border-bottom: 1px solid #eee;
}
@media only screen and (min-width: 768px) {
  .post-preview {
    padding: 35px 0;
  }
}

.post-preview:last-child {
  border-bottom: 0;
}

.post-preview a {
  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;
}

.post-preview .post-title {
  font-size: 30px;
  margin-top: 0;
}
.post-preview .post-subtitle {
  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;
}
.page-meta {
  align-self: center;
}
.post-preview .post-meta a,
.post-heading .post-meta a,
.page-meta a {
  color: #404040;
  text-decoration: none;
}
.post-preview .post-entry {
  font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
}
.post-entry-container {
  display: inline-block;
  width: 100%;
}
.post-entry {
  width: 100%;
  margin-top: 10px;
}
.post-image {
  float: right;
  height: 192px;
  width: 192px;
  margin-top: -35px;
  filter: grayscale(90%);
}
.post-image:hover {
  filter: grayscale(0%);
}
.post-image img {
  border-radius: 100px;
  height: 192px;
  width: 192px;
}
.post-preview .post-read-more {
  font-weight: 800;
  float: right;
}

@media only screen and (min-width: 768px) {
  .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;
}

.blog-tags:before {
  content: "Tags: ";
}

.blog-tags a {
  color: #008AFF;
  text-decoration: none;
  padding: 0px 5px;
}

.blog-tags a:before {
  content: "#";
}

.blog-tags a:hover {
  border-radius: 2px;
  color: #008AFF;
  background-color: #CCC;
}

.post-preview .blog-tags {
  margin-top: 5px;
  margin-bottom: 0;
}

@media only screen and (min-width: 768px) {
  .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 {
    width: 100%;
    text-align: center;
    margin-top: 0;
    float: left;
  }
}
/* --- Post and page headers --- */

.intro-header {
  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;
}
.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;
}
.intro-header .page-heading,
.intro-header .tags-heading,
.intro-header .categories-heading {
  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;
}
.intro-header .page-heading h1,
.intro-header .tags-heading h1,
.intro-header .categories-heading h1 {
  margin-top: 0;
  font-size: 50px;
}
.intro-header .post-heading h1 {
  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;
}
.intro-header .post-heading .post-subheading {
  margin-bottom: 20px;
}
.intro-header.big-img .page-heading .page-subheading,
.intro-header.big-img .post-heading .post-subheading {
  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;
}
.intro-header.big-img .post-heading .post-meta {
  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;
}
@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;
  }
}

.header-section.has-img .no-img {
  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;
}
@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;
  }
}
@media only screen and (max-width: 325px) {
  .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;
}

/* --- 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;
}
@media only screen and (min-width: 768px) {
  .pager li a {
    padding: 15px 25px;
  }
}
.pager li a:hover,
.pager li a:focus {
  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;
}

.pager.blog-pager {
  margin-top:10px;
}

h4.panel-title > span.badge {
    float: right;
}

@media only screen and (min-width: 768px) {
  .pager.blog-pager  {
    margin-top: 40px;
  }
}

/* --- Tables --- */

table {
  padding: 0;
}
table tr {
  border-top: 1px solid #cccccc;
  background-color: #ffffff;
  margin: 0;
  padding: 0;
}
@media (prefers-color-scheme: dark) {
}
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
}
}
table tr th {
  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;
}
table tr th :first-child,
table tr td :first-child {
  margin-top: 0;
}
table tr th :last-child,
table tr td :last-child {
  margin-bottom: 0;
}

/* --- Social media sharing section --- */

#social-share-section {
  margin-bottom: 30px;
}

/* --- Google Custom Search Engine Popup --- */
#modalSearch table tr, #modalSearch table tr td, #modalSearch table tr th {
  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;
}
input.gsc-input, .gsc-input-box, .gsc-input-box-hover, .gsc-input-box-focus, .gsc-search-button {
  box-sizing: content-box;
  line-height: normal;
}

/* IPython split style */
div.splitbox {width:100%; overflow:auto;}

div.splitbox div.left {
               width:48%;
               float:left;}
div.splitbox div.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;}
}

/* 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;
}
@media only screen and (min-width: 768px) {
  .disqus-comments button {
    padding: 15px 25px;
  }
}
.disqus-comments button:hover, 
.disqus-comments button:focus {
  color: #FFF;
  background: #0085a1;
  border: 1px solid #0085a1;
}

/* Related posts */
h4.see-also {
  margin-top: 20px;
}

/* Sharing */
 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: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 a {
  background-color: #b5c6ce;
  display: block;
  border-radius: 50%;
  text-decoration: none !important;
  margin: 0;
}
 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;
  }
}

/* --- Make long KaTeX equations scrollable in the x-axis --- */
.katex-display>.katex {
    overflow-x: auto;
    overflow-y: hidden;
  }


  .highlight {
    box-sizing: border-box;
    padding: 10px;
    position: relative;
  }
  
  .copyCodeButton {
    background-color: #f5f5f5;
    border: 1px solid #ccc;
    color: black;
    cursor: pointer;
    display: none;
    font-size: 14px;
    padding: 5px 10px;
    position: absolute;
    right: 10px;
    top: 10px;
    transition: background-color 0.3s ease;
    z-index: 10;
  }
  
  .highlight:hover .copyCodeButton {
    display: block;
  }
  
  .copyCodeButton:hover {
    background-color: #e0e0e0;
  }