Make icons white in dark mode

8 files changed, 16 insertions, 19 deletions

diff --git a/assets/_defaults.scss b/assets/_defaults.scss
index c905c91..354af74 100644
--- a/assets/_defaults.scss
+++ b/assets/_defaults.scss
@@ -41,9 +41,11 @@ $toc-width: 16rem !default;
 $md-breakpoint: $menu-width + $body-min-width * 1.25 + $toc-width !default;
 $sm-breakpoint: $menu-width + $body-min-width !default;
 
-// Panel colors
+// Hint colors
 $hint-colors: (
   info: #6bf,
   warning: #fd6,
   danger: #f66
 ) !default;
+
+$icon-filter: none !default;
diff --git a/assets/_main.scss b/assets/_main.scss
index ce810dd..23aece3 100644
--- a/assets/_main.scss
+++ b/assets/_main.scss
@@ -94,6 +94,10 @@ ul.pagination {
   margin: 0 auto;
 }
 
+.book-icon {
+  filter: $icon-filter;
+}
+
 .book-brand {
   margin-top: 0;
 
@@ -275,17 +279,6 @@ ul.pagination {
   }
 }
 
-.book-posts {
-  min-width: $body-min-width;
-  max-width: $body-min-width * 2;
-  flex-grow: 1;
-  padding: $padding-16;
-
-  article {
-    padding-bottom: $padding-16;
-  }
-}
-
 .book-home {
   padding: $padding-16;
 }
diff --git a/assets/plugins/_dark.scss b/assets/plugins/_dark.scss
index 596c746..5796a89 100644
--- a/assets/plugins/_dark.scss
+++ b/assets/plugins/_dark.scss
@@ -6,3 +6,5 @@ $body-font-color: #e9ecef;
 
 $color-link: #84b2ff;
 $color-visited-link: #b88dff;
+
+$icon-filter: brightness(0) invert(1);
diff --git a/exampleSite/resources/_gen/assets/scss/book.scss_50fc8c04e12a2f59027287995557ceff.content b/exampleSite/resources/_gen/assets/scss/book.scss_50fc8c04e12a2f59027287995557ceff.content
index 47c67f0..c1ab91c 100644
--- a/exampleSite/resources/_gen/assets/scss/book.scss_50fc8c04e12a2f59027287995557ceff.content
+++ b/exampleSite/resources/_gen/assets/scss/book.scss_50fc8c04e12a2f59027287995557ceff.content
@@ -1 +1 @@
-/*!normalize.css v8.0.1 | MIT License | github.com/necolas/normalize.css*/html{line-height:1.15;-webkit-text-size-adjust:100%}body{margin:0}main{display:block}h1{font-size:2em;margin:.67em 0}hr{box-sizing:content-box;height:0;overflow:visible}pre{font-family:monospace,monospace;font-size:1em}a{background-color:transparent}abbr[title]{border-bottom:none;text-decoration:underline;text-decoration:underline dotted}b,strong{font-weight:bolder}code,kbd,samp{font-family:monospace,monospace;font-size:1em}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}img{border-style:none}button,input,optgroup,select,textarea{font-family:inherit;font-size:100%;line-height:1.15;margin:0}button,input{overflow:visible}button,select{text-transform:none}button,[type=button],[type=reset],[type=submit]{-webkit-appearance:button}button::-moz-focus-inner,[type=button]::-moz-focus-inner,[type=reset]::-moz-focus-inner,[type=submit]::-moz-focus-inner{border-style:none;padding:0}button:-moz-focusring,[type=button]:-moz-focusring,[type=reset]:-moz-focusring,[type=submit]:-moz-focusring{outline:1px dotted ButtonText}fieldset{padding:.35em .75em .625em}legend{box-sizing:border-box;color:inherit;display:table;max-width:100%;padding:0;white-space:normal}progress{vertical-align:baseline}textarea{overflow:auto}[type=checkbox],[type=radio]{box-sizing:border-box;padding:0}[type=number]::-webkit-inner-spin-button,[type=number]::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}[type=search]::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}details{display:block}summary{display:list-item}template{display:none}[hidden]{display:none}.flex{display:flex}.flex-auto{flex:1 1 auto}.flex-even{flex:1 1}.flex-wrap{flex-wrap:wrap}.justify-start{justify-content:flex-start}.justify-end{justify-content:flex-end}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.align-center{align-items:center}.mx-auto{margin:0 auto}.text-center{text-align:center}.hidden{display:none}html{font-size:16px;letter-spacing:.33px;scroll-behavior:smooth}html,body{min-width:20rem;overflow-x:hidden}body{color:#343a40;background:#fff;font-weight:400;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;box-sizing:border-box}body *{box-sizing:inherit}h1,h2,h3,h4,h5{font-weight:400}a{text-decoration:none;color:#05b}a:visited{color:#8440f1}img{vertical-align:baseline}aside nav ul{padding:0;margin:0;list-style:none}aside nav ul li{margin:1em 0}aside nav ul a{display:block}aside nav ul a:hover{opacity:.5}aside nav ul ul{padding-left:1rem}.levels-1 ul ul,.levels-2 ul ul ul,.levels-3 ul ul ul ul,.levels-4 ul ul ul ul ul,.levels-5 ul ul ul ul ul ul,.levels-6 ul ul ul ul ul ul ul{display:none}ul.pagination{display:flex;justify-content:center;list-style-type:none}ul.pagination .page-item a{padding:1rem}.container{max-width:80rem;margin:0 auto}.book-brand{margin-top:0}.book-brand img{height:1.5em;width:auto;vertical-align:middle;margin-right:.5rem}.book-menu{flex:0 0 16rem;font-size:.875rem}.book-menu nav{width:16rem;padding:1rem;position:fixed;top:0;bottom:0;overflow-x:hidden;overflow-y:auto}.book-menu a{color:inherit}.book-menu a.active{color:#05b}.book-section-flat{margin-bottom:2rem}.book-section-flat:not(:first-child){margin-top:2rem}.book-section-flat>a,.book-section-flat>span{font-weight:bolder}.book-section-flat>ul{padding-left:0}.book-page{min-width:20rem;flex-grow:1;padding:1rem}.book-header{margin-bottom:1rem;display:none}.book-search{position:relative;margin:1rem 0;border-bottom:1px solid transparent}.book-search::after{display:block;content:"";clear:both}.book-search input{width:100%;padding:.5rem;border:0;border-radius:.25rem;background:#f8f9fa;color:#343a40}.book-search input:required+.book-search-spinner{display:block}.book-search .book-search-spinner{position:absolute;margin:.5rem;right:0;top:0;width:1rem;height:1rem;border:1px solid transparent;border-top-color:#343a40;border-radius:50%;animation:spin 1s ease infinite}@keyframes spin{100%{transform:rotate(360deg)}}.book-toc{flex:0 0 16rem;font-size:.75rem}.book-toc nav{width:16rem;padding:1rem;position:fixed;top:0;bottom:0;overflow-x:hidden;overflow-y:auto}.book-toc img{height:1em}.book-toc nav>ul>li:first-child{margin-top:0}.book-footer{display:flex;padding-top:1rem;font-size:.875rem}.book-footer img{height:1em;margin-right:.5rem}.book-languages{position:relative;overflow:visible;padding:1rem;margin:-1rem}.book-languages:hover .book-languages-list{display:block}.book-languages .book-languages-list{display:none;position:absolute;bottom:0;left:0;padding:.5rem 0;background:#fff;box-shadow:0 0 .25rem rgba(0,0,0,.1)}.book-languages .book-languages-list li{padding:.5rem 1rem;white-space:nowrap}.book-languages .book-languages-list img{opacity:.1}.book-languages .book-languages-list li.active img{opacity:1}.book-languages .book-languages-list a{color:inherit}.book-languages ul{margin:0;padding:0;list-style:none}.book-posts{min-width:20rem;max-width:40rem;flex-grow:1;padding:1rem}.book-posts article{padding-bottom:1rem}.book-home{padding:1rem}aside nav,.book-page,.book-posts,.markdown{transition:.2s ease-in-out;transition-property:transform,margin-left,opacity;will-change:transform,margin-left}@media screen and (max-width:57rem){.book-toc{display:none}}@media screen and (max-width:36rem){.book-menu{margin-left:-16rem;font-size:16px}.book-header{display:flex}#menu-control:checked+main .book-menu nav,#menu-control:checked+main .book-page,#menu-control:checked+main .book-posts{transform:translateX(16rem)}#menu-control:checked+main .book-header label{transform:rotate(90deg)}#menu-control:checked+main .markdown{opacity:.25}}@media screen and (min-width:80rem){.book-page,.book-posts,.book-menu nav,.book-toc nav{padding:2rem 1rem}}@font-face{font-family:roboto;font-style:italic;font-weight:300;font-display:swap;src:local("Roboto Light Italic"),local("Roboto-LightItalic"),url(fonts/roboto-v19-latin-300italic.woff2)format("woff2"),url(fonts/roboto-v19-latin-300italic.woff)format("woff")}@font-face{font-family:roboto;font-style:normal;font-weight:400;font-display:swap;src:local("Roboto"),local("Roboto-Regular"),url(fonts/roboto-v19-latin-regular.woff2)format("woff2"),url(fonts/roboto-v19-latin-regular.woff)format("woff")}@font-face{font-family:roboto;font-style:normal;font-weight:700;font-display:swap;src:local("Roboto Bold"),local("Roboto-Bold"),url(fonts/roboto-v19-latin-700.woff2)format("woff2"),url(fonts/roboto-v19-latin-700.woff)format("woff")}@font-face{font-family:roboto mono;font-style:normal;font-weight:400;font-display:swap;src:local("Roboto Mono"),local("RobotoMono-Regular"),url(fonts/roboto-mono-v6-latin-regular.woff2)format("woff2"),url(fonts/roboto-mono-v6-latin-regular.woff)format("woff")}body{font-family:roboto,sans-serif}code{font-family:roboto mono,monospace}@media print{.book-menu,.book-footer{display:none}main{flex-direction:column-reverse}.book-toc{flex:none}.book-toc nav{position:relative;width:auto}}.markdown{line-height:1.6em}.markdown>:first-child{margin-top:0}.markdown h1,.markdown h2,.markdown h3,.markdown h4,.markdown h5,.markdown h6{font-weight:400;line-height:1em;margin-top:1.5em;margin-bottom:1rem}.markdown h4,.markdown h5,.markdown h6{font-weight:bolder}.markdown h5{font-size:.875em}.markdown h6{font-size:.75em}.markdown b,.markdown optgroup,.markdown strong{font-weight:bolder}.markdown a{text-decoration:none}.markdown a:hover{text-decoration:underline}.markdown img{max-width:100%}.markdown code{padding:0 .25rem;background:#e9ecef;border-radius:.15rem;font-size:.875em}.markdown pre{padding:1rem;background:#f8f9fa;border-radius:.15rem;overflow-x:auto}.markdown pre code{padding:0;background:0 0}.markdown blockquote{margin:1rem 0;padding:.5rem 1rem .5rem .75rem;border-left:.25rem solid #e9ecef;border-radius:.15rem}.markdown blockquote :first-child{margin-top:0}.markdown blockquote :last-child{margin-bottom:0}.markdown table{overflow:auto;display:block;border-spacing:0;border-collapse:collapse;margin-top:1rem;margin-bottom:1rem}.markdown table tr th,.markdown table tr td{padding:.5rem 1rem;border:1px solid #e9ecef}.markdown table tr:nth-child(2n){background:#f8f9fa}.markdown hr{height:1px;border:none;background:#e9ecef}.markdown ul,.markdown ol{padding-left:2rem}.markdown dl dt{font-weight:bolder;margin-top:1rem}.markdown dl dd{margin-left:2rem}.markdown .highlight table tr td:nth-child(1) pre{margin:0;padding-right:0}.markdown .highlight table tr td:nth-child(2) pre{margin:0;padding-left:0}.markdown-inner>:first-child{margin-top:0}.markdown-inner>:last-child{margin-bottom:0}.book-expand{margin-top:1rem;margin-bottom:1rem;border:1px solid #e9ecef;border-radius:.15rem;overflow:hidden}.book-expand .book-expand-head{background:#f8f9fa;padding:.5rem 1rem;cursor:pointer}.book-expand .book-expand-content{display:none;padding:1rem}.book-expand input[type=checkbox]:checked+.book-expand-content{display:block}.book-tabs{margin-top:1rem;margin-bottom:1rem;border:1px solid #e9ecef;border-radius:.15rem;overflow:hidden;display:flex;flex-wrap:wrap}.book-tabs label{display:inline-block;padding:.5rem 1rem;border-bottom:1px transparent;cursor:pointer}.book-tabs .book-tabs-content{order:999;width:100%;border-top:1px solid #f8f9fa;padding:1rem;display:none}.book-tabs input[type=radio]:checked+label{border-bottom:1px solid #05b}.book-tabs input[type=radio]:checked+label+.book-tabs-content{display:block}.book-columns{margin-left:-1rem;margin-right:-1rem}.book-columns>div{margin:1rem 0;min-width:13.2rem;padding:0 1rem}a.book-btn{display:inline-block;color:#05b!important;text-decoration:none!important;border:1px solid #05b;border-radius:.15rem;padding:.25rem 1rem;margin-top:.5rem;margin-bottom:.5rem;cursor:pointer}.book-hint.info{border-left-color:#6bf;background-color:rgba(102,187,255,.1)}.book-hint.warning{border-left-color:#fd6;background-color:rgba(255,221,102,.1)}.book-hint.danger{border-left-color:#f66;background-color:rgba(255,102,102,.1)}
\ No newline at end of file
+/*!normalize.css v8.0.1 | MIT License | github.com/necolas/normalize.css*/html{line-height:1.15;-webkit-text-size-adjust:100%}body{margin:0}main{display:block}h1{font-size:2em;margin:.67em 0}hr{box-sizing:content-box;height:0;overflow:visible}pre{font-family:monospace,monospace;font-size:1em}a{background-color:transparent}abbr[title]{border-bottom:none;text-decoration:underline;text-decoration:underline 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.book-search-spinner{position:absolute;margin:.5rem;right:0;top:0;width:1rem;height:1rem;border:1px solid transparent;border-top-color:#343a40;border-radius:50%;animation:spin 1s ease infinite}@keyframes spin{100%{transform:rotate(360deg)}}.book-toc{flex:0 0 16rem;font-size:.75rem}.book-toc nav{width:16rem;padding:1rem;position:fixed;top:0;bottom:0;overflow-x:hidden;overflow-y:auto}.book-toc img{height:1em}.book-toc nav>ul>li:first-child{margin-top:0}.book-footer{display:flex;padding-top:1rem;font-size:.875rem}.book-footer img{height:1em;margin-right:.5rem}.book-languages{position:relative;overflow:visible;padding:1rem;margin:-1rem}.book-languages:hover .book-languages-list{display:block}.book-languages .book-languages-list{display:none;position:absolute;bottom:0;left:0;padding:.5rem 0;background:#fff;box-shadow:0 0 .25rem rgba(0,0,0,.1)}.book-languages .book-languages-list li{padding:.5rem 1rem;white-space:nowrap}.book-languages .book-languages-list img{opacity:.1}.book-languages .book-languages-list li.active img{opacity:1}.book-languages .book-languages-list a{color:inherit}.book-languages ul{margin:0;padding:0;list-style:none}.book-home{padding:1rem}aside nav,.book-page,.book-posts,.markdown{transition:.2s ease-in-out;transition-property:transform,margin-left,opacity;will-change:transform,margin-left}@media screen and (max-width:57rem){.book-toc{display:none}}@media screen and (max-width:36rem){.book-menu{margin-left:-16rem;font-size:16px}.book-header{display:flex}#menu-control:checked+main .book-menu nav,#menu-control:checked+main .book-page,#menu-control:checked+main .book-posts{transform:translateX(16rem)}#menu-control:checked+main .book-header label{transform:rotate(90deg)}#menu-control:checked+main .markdown{opacity:.25}}@media screen and (min-width:80rem){.book-page,.book-posts,.book-menu nav,.book-toc nav{padding:2rem 1rem}}@font-face{font-family:roboto;font-style:italic;font-weight:300;font-display:swap;src:local("Roboto Light Italic"),local("Roboto-LightItalic"),url(fonts/roboto-v19-latin-300italic.woff2)format("woff2"),url(fonts/roboto-v19-latin-300italic.woff)format("woff")}@font-face{font-family:roboto;font-style:normal;font-weight:400;font-display:swap;src:local("Roboto"),local("Roboto-Regular"),url(fonts/roboto-v19-latin-regular.woff2)format("woff2"),url(fonts/roboto-v19-latin-regular.woff)format("woff")}@font-face{font-family:roboto;font-style:normal;font-weight:700;font-display:swap;src:local("Roboto Bold"),local("Roboto-Bold"),url(fonts/roboto-v19-latin-700.woff2)format("woff2"),url(fonts/roboto-v19-latin-700.woff)format("woff")}@font-face{font-family:roboto mono;font-style:normal;font-weight:400;font-display:swap;src:local("Roboto Mono"),local("RobotoMono-Regular"),url(fonts/roboto-mono-v6-latin-regular.woff2)format("woff2"),url(fonts/roboto-mono-v6-latin-regular.woff)format("woff")}body{font-family:roboto,sans-serif}code{font-family:roboto mono,monospace}@media print{.book-menu,.book-footer{display:none}main{flex-direction:column-reverse}.book-toc{flex:none}.book-toc nav{position:relative;width:auto}}.markdown{line-height:1.6em}.markdown>:first-child{margin-top:0}.markdown h1,.markdown h2,.markdown h3,.markdown h4,.markdown h5,.markdown h6{font-weight:400;line-height:1em;margin-top:1.5em;margin-bottom:1rem}.markdown h4,.markdown h5,.markdown h6{font-weight:bolder}.markdown h5{font-size:.875em}.markdown h6{font-size:.75em}.markdown b,.markdown optgroup,.markdown strong{font-weight:bolder}.markdown a{text-decoration:none}.markdown a:hover{text-decoration:underline}.markdown img{max-width:100%}.markdown code{padding:0 .25rem;background:#e9ecef;border-radius:.15rem;font-size:.875em}.markdown pre{padding:1rem;background:#f8f9fa;border-radius:.15rem;overflow-x:auto}.markdown pre code{padding:0;background:0 0}.markdown blockquote{margin:1rem 0;padding:.5rem 1rem .5rem .75rem;border-left:.25rem solid #e9ecef;border-radius:.15rem}.markdown blockquote :first-child{margin-top:0}.markdown blockquote :last-child{margin-bottom:0}.markdown table{overflow:auto;display:block;border-spacing:0;border-collapse:collapse;margin-top:1rem;margin-bottom:1rem}.markdown table tr th,.markdown table tr td{padding:.5rem 1rem;border:1px solid #e9ecef}.markdown table tr:nth-child(2n){background:#f8f9fa}.markdown hr{height:1px;border:none;background:#e9ecef}.markdown ul,.markdown ol{padding-left:2rem}.markdown dl dt{font-weight:bolder;margin-top:1rem}.markdown dl dd{margin-left:2rem}.markdown .highlight table tr td:nth-child(1) pre{margin:0;padding-right:0}.markdown .highlight table tr td:nth-child(2) pre{margin:0;padding-left:0}.markdown-inner>:first-child{margin-top:0}.markdown-inner>:last-child{margin-bottom:0}.book-expand{margin-top:1rem;margin-bottom:1rem;border:1px solid #e9ecef;border-radius:.15rem;overflow:hidden}.book-expand .book-expand-head{background:#f8f9fa;padding:.5rem 1rem;cursor:pointer}.book-expand .book-expand-content{display:none;padding:1rem}.book-expand input[type=checkbox]:checked+.book-expand-content{display:block}.book-tabs{margin-top:1rem;margin-bottom:1rem;border:1px solid #e9ecef;border-radius:.15rem;overflow:hidden;display:flex;flex-wrap:wrap}.book-tabs label{display:inline-block;padding:.5rem 1rem;border-bottom:1px transparent;cursor:pointer}.book-tabs .book-tabs-content{order:999;width:100%;border-top:1px solid #f8f9fa;padding:1rem;display:none}.book-tabs input[type=radio]:checked+label{border-bottom:1px solid #05b}.book-tabs input[type=radio]:checked+label+.book-tabs-content{display:block}.book-columns{margin-left:-1rem;margin-right:-1rem}.book-columns>div{margin:1rem 0;min-width:13.2rem;padding:0 1rem}a.book-btn{display:inline-block;color:#05b!important;text-decoration:none!important;border:1px solid #05b;border-radius:.15rem;padding:.25rem 1rem;margin-top:.5rem;margin-bottom:.5rem;cursor:pointer}.book-hint.info{border-left-color:#6bf;background-color:rgba(102,187,255,.1)}.book-hint.warning{border-left-color:#fd6;background-color:rgba(255,221,102,.1)}.book-hint.danger{border-left-color:#f66;background-color:rgba(255,102,102,.1)}
\ No newline at end of file
diff --git a/exampleSite/resources/_gen/assets/scss/book.scss_50fc8c04e12a2f59027287995557ceff.json b/exampleSite/resources/_gen/assets/scss/book.scss_50fc8c04e12a2f59027287995557ceff.json
index 641fca8..43496d3 100644
--- a/exampleSite/resources/_gen/assets/scss/book.scss_50fc8c04e12a2f59027287995557ceff.json
+++ b/exampleSite/resources/_gen/assets/scss/book.scss_50fc8c04e12a2f59027287995557ceff.json
@@ -1 +1 @@
-{"Target":"book.min.eddc90f1d1267cb826e7cffc53c434e50061c4bfe41146a43670842ce6cb3bf6.css","MediaType":"text/css","Data":{"Integrity":"sha256-7dyQ8dEmfLgm58/8U8Q05QBhxL/kEUakNnCELObLO/Y="}}
\ No newline at end of file
+{"Target":"book.min.daeb3603c687f9ac8113081371aff99b3a3a6406ce59d6f8e0a2d0e545b7bd24.css","MediaType":"text/css","Data":{"Integrity":"sha256-2us2A8aH+ayBEwgTca/5mzo6ZAbOWdb44KLQ5UW3vSQ="}}
\ No newline at end of file
diff --git a/layouts/partials/docs/footer.html b/layouts/partials/docs/footer.html
index 9ee8853..df7ed52 100644
--- a/layouts/partials/docs/footer.html
+++ b/layouts/partials/docs/footer.html
@@ -8,7 +8,7 @@
   <div>
     {{ $date := .AuthorDate.Local.Format (default "January 2, 2006" $.Site.Params.BookDateFormat) }}
     <a class="flex align-center" href="{{ $.Site.Params.BookRepo }}/commit/{{ .Hash }}" title='{{ i18n "Last modified by" }} {{ .AuthorName }} | {{ $date }}' target="_blank">
-      <img src="{{ "svg/calendar.svg" | relURL }}" alt="Calendar" />
+      <img src="{{ "svg/calendar.svg" | relURL }}" class="book-icon" alt="Calendar" />
       <span>{{ $date }}</span>
     </a>
   </div>
@@ -18,7 +18,7 @@
   {{ if and .File .Site.Params.BookRepo .Site.Params.BookEditPath }}
   <div>
     <a class="flex align-center" href="{{ .Site.Params.BookRepo }}/{{ .Site.Params.BookEditPath }}/{{ .File.Path }}" target="_blank">
-      <img src="{{ "svg/edit.svg" | relURL }}" alt="Edit" />
+      <img src="{{ "svg/edit.svg" | relURL }}" class="book-icon" alt="Edit" />
       <span>{{ i18n "Edit this page" }}</span>
     </a>
   </div>
diff --git a/layouts/partials/docs/languages.html b/layouts/partials/docs/languages.html
index 1666215..4fa1f46 100644
--- a/layouts/partials/docs/languages.html
+++ b/layouts/partials/docs/languages.html
@@ -11,7 +11,7 @@
 
   <ul>
     <li class="flex">
-      <img src="{{ "svg/translate.svg" | relURL }}" alt="Languages" />
+      <img src="{{ "svg/translate.svg" | relURL }}" class="book-icon" alt="Languages" />
       {{ $.Site.Language.LanguageName }}
     </li> 
   </ul>
@@ -20,7 +20,7 @@
     {{ range sort $langs }}
     <li class="{{ if (eq $.Site.Language .Language ) }}active{{ end }}">
       <a href="{{ .Permalink }}" class="flex">
-        <img src="{{ "svg/translate.svg" | relURL }}" alt="Languages" />
+        <img src="{{ "svg/translate.svg" | relURL }}" class="book-icon" alt="Languages" />
         {{ .Language.LanguageName }}
       </a>
     </li>
diff --git a/layouts/partials/docs/mobile-header.html b/layouts/partials/docs/mobile-header.html
index 720b83d..b69f58c 100644
--- a/layouts/partials/docs/mobile-header.html
+++ b/layouts/partials/docs/mobile-header.html
@@ -1,6 +1,6 @@
 <header class="flex align-center justify-between book-header">
   <label for="menu-control">
-    <img src="{{ "svg/menu.svg" | relURL }}" alt="Menu" />
+    <img src="{{ "svg/menu.svg" | relURL }}" class="book-icon" alt="Menu" />
   </label>
   <strong>{{ partial "docs/title" . }}</strong>
 </header>