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<h1 id="customization">Customization</h1>
<p>The Relearn theme has been built to be as configurable as possible by defining multiple <a href="https://gohugo.io/templates/partials/" target="_blank">partials</a></p>
<p>In <code>themes/hugo-theme-relearn/layouts/partials/</code>, you will find all the partials defined for this theme. If you need to overwrite something, don’t change the code directly. Instead <a href="https://gohugo.io/themes/customizing/" target="_blank">follow this page</a>. You’d create a new partial in the <code>layouts/partials</code> folder of your local project. This partial will have the priority.</p>
<p>This theme defines the following partials :</p>
<ul>
<li><code>header.html</code>: the header of the page. See <a href="#output-formats">output-formats</a></li>
<li><code>footer.html</code>: the footer of the page. See <a href="#output-formats">output-formats</a></li>
<li><code>body.html</code>: the body of the page. The body may contain of one or many articles. See <a href="#output-formats">output-formats</a></li>
<li><code>article.html</code>: the output for a single article, can contain elements around your content. See <a href="#output-formats">output-formats</a></li>
<li><code>menu.html</code>: left menu. <em>Not meant to be overwritten</em></li>
<li><code>search.html</code>: search box. <em>Not meant to be overwritten</em></li>
<li><code>custom-header.html</code>: custom headers in page. Meant to be overwritten when adding CSS imports. Don’t forget to include <code>style</code> HTML tag directive in your file.</li>
<li><code>custom-footer.html</code>: custom footer in page. Meant to be overwritten when adding JavaScript. Don’t forget to include <code>javascript</code> HTML tag directive in your file.</li>
<li><code>favicon.html</code>: the favicon</li>
<li><code>heading-pre.html</code>: side-wide configuration to prepend to pages title headings. If you override this, it is your responsibility to take the page’s <code>headingPre</code> setting into account.</li>
<li><code>heading-post.html</code>: side-wide configuration to append to pages title headings. If you override this, it is your responsibility to take the page’s <code>headingPost</code> setting into account.</li>
<li><code>logo.html</code>: the logo, on top left hand corner</li>
<li><code>meta.html</code>: HTML meta tags, if you want to change default behavior</li>
<li><code>menu-pre.html</code>: side-wide configuration to prepend to menu items. If you override this, it is your responsibility to take the page’s <code>menuPre</code> setting into account.</li>
<li><code>menu-post.html</code>: side-wide configuration to append to menu items. If you override this, it is your responsibility to take the page’s <code>menuPost</code> setting into account.</li>
<li><code>menu-footer.html</code>: footer of the the left menu</li>
<li><code>toc.html</code>: table of contents</li>
<li><code>content.html</code>: the content page itself. This can be overridden if you want to display page’s meta data above or below the content.</li>
<li><code>content-footer</code>: footer below the content, has a default implementation but you can overwrite it if you don’t like it.</li>
</ul>
<h2 id="change-the-logo">Change the logo</h2>
<p>Create a new file in <code>layouts/partials/</code> named <code>logo.html</code>. Then write any HTML you want.
You could use an <code>img</code> HTML tag and reference an image created under the <em>static</em> folder, or you could paste a SVG definition!</p>
<div class="box notices cstyle note">
<div class="box-label"><i class="fa-fw fas fa-exclamation-circle"></i> Note</div>
<div class="box-content">
<p>The size of the logo will adapt automatically</p>
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</div>
<h2 id="change-the-favicon">Change the favicon</h2>
<p>If your favicon is a SVG, PNG or ICO, just drop off your image in your local <code>static/images/</code> folder and name it <code>favicon.svg</code>, <code>favicon.png</code> or <code>favicon.ico</code> respectively.</p>
<p>If no favicon file is found, the theme will lookup the alternative filename <code>logo</code> in the same location and will repeat the search for the list of supported file types.</p>
<p>If you need to change this default behavior, create a new file in <code>layouts/partials/</code> named <code>favicon.html</code>. Then write something like this:</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-html" data-lang="html"><span class="line"><span class="cl"><span class="p"><</span><span class="nt">link</span> <span class="na">rel</span><span class="o">=</span><span class="s">"icon"</span> <span class="na">href</span><span class="o">=</span><span class="s">"/images/favicon.bmp"</span> <span class="na">type</span><span class="o">=</span><span class="s">"image/bmp"</span><span class="p">></span>
</span></span></code></pre></div><h2 id="theme-variant">Change the colors</h2>
<p>The Relearn theme lets you choose between some predefined color variants in light or dark mode, but feel free to add one yourself!</p>
<p>You can preview the shipped variants by changing them in the variant selector at the bottom of the menu.</p>
<h3 id="single-variant">Single variant</h3>
<p>Set the <code>themeVariant</code> value with the name of your theme file. That’s it!</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-toml" data-lang="toml"><span class="line"><span class="cl"><span class="p">[</span><span class="nx">params</span><span class="p">]</span>
</span></span><span class="line"><span class="cl"> <span class="nx">themeVariant</span> <span class="p">=</span> <span class="s2">"relearn-light"</span>
</span></span></code></pre></div><p>In the above example your theme file has to be named <code>theme-relearn-light.css</code></p>
<h3 id="multiple-variants">Multiple variants</h3>
<p>You can also set multiple variants. In this case, the first variant is the default chosen on first view and a variant switch will be shown in the menu footer.</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-toml" data-lang="toml"><span class="line"><span class="cl"><span class="p">[</span><span class="nx">params</span><span class="p">]</span>
</span></span><span class="line"><span class="cl"> <span class="c"># Change default color scheme with a variant one.</span>
</span></span><span class="line"><span class="cl"> <span class="nx">themeVariant</span> <span class="p">=</span> <span class="p">[</span> <span class="s2">"relearn-light"</span><span class="p">,</span> <span class="s2">"relearn-dark"</span> <span class="p">]</span>
</span></span></code></pre></div>
<div class="box notices cstyle tip">
<div class="box-label"><i class="fa-fw fas fa-lightbulb"></i> Tip</div>
<div class="box-content">
<p>If you want to switch the syntax highlighting theme together with your color variant, generate a syntax highlighting stylesheet and configure your installation <a href="https://gohugo.io/content-management/syntax-highlighting/" target="_blank">according to Hugo’s documentation</a>, and <code>@import</code> this stylesheet in your color variant stylesheet. For an example, take a look into <code>theme-relearn-light.css</code> and <code>config.toml</code> of the exampleSite.</p>
</div>
</div>
<h3 id="adjust-to-os-settings">Adjust to OS Settings</h3>
<p>You can also cause the site to adjust to your OS settings for light/dark mode. Just set the <code>themeVariant</code> to <code>auto</code>. That’s it.</p>
<p>If you’ve set multiple variants, you can drop <code>auto</code> at any position, but usually it makes sense to set it in the first position and make it the default.</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-toml" data-lang="toml"><span class="line"><span class="cl"><span class="p">[</span><span class="nx">params</span><span class="p">]</span>
</span></span><span class="line"><span class="cl"> <span class="nx">themeVariant</span> <span class="p">=</span> <span class="p">[</span> <span class="s2">"auto"</span><span class="p">,</span> <span class="s2">"red"</span> <span class="p">]</span>
</span></span></code></pre></div><p>If you don’t configure anything else, the theme will use <code>relearn-light</code> for light mode and <code>relearn-dark</code> for dark mode.</p>
<p>If you don’t like that, you can set <code>themeVariantAuto</code>. The first element is the variant for light mode, the second for dark mode</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-toml" data-lang="toml"><span class="line"><span class="cl"><span class="p">[</span><span class="nx">params</span><span class="p">]</span>
</span></span><span class="line"><span class="cl"> <span class="nx">themeVariantAuto</span> <span class="p">=</span> <span class="p">[</span> <span class="s2">"learn"</span><span class="p">,</span> <span class="s2">"neon"</span> <span class="p">]</span>
</span></span></code></pre></div>
<div class="box notices cstyle note">
<div class="box-label"><i class="fa-fw fas fa-exclamation-circle"></i> Note</div>
<div class="box-content">
<p>This is not supported for Internet Explorer 11, which still displays in the <code>relearn-light</code> variant.</p>
</div>
</div>
<h3 id="roll-your-own">Roll your own</h3>
<p>If you are not happy with the shipped variants you can either copy and rename one of the shipped files from <code>themes/hugo-theme-relearn/static/css</code> to <code>static/css</code>, edit them afterwards to your liking in a text editor and configure the <code>themeVariant</code> parameter in your <code>config.toml</code> or just use the <a href="../../basics/generator/">interactive variant generator</a>.</p>
<h3 id="output-formats">Output formats</h3>
<p>Certain parts of the theme can be changed for support of your own <a href="https://gohugo.io/templates/output-formats/" target="_blank">output formats</a>. Eg. if you define a new output format <code>PLAINTEXT</code> in your <code>config.toml</code>, you can add a file <code>layouts/partials/header.plaintext.html</code> to change the way, the page header should look like for that output format.</p>
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