WordPressの多言語化:Bogoプラグインを利用

WP Responsive Menuの設定

Content After Elementに以下のHTMLを挿入

<div class="wp-block-bogo-language-switcher">
<ul class="bogo-language-switcher">
<li style="margin: 1em 0.5em;" class="en-US en first"><span class="bogoflags bogoflags-us"></span> <span class="bogo-language-name"><a style="padding: 0; display:inline;" rel="alternate" hreflang="en-US" href="https://blog.shoheiaoki.com/en/" title="English">English</a></span></li>
<li style="margin: 1em 0.5em;" class="ja current last"><span class="bogoflags bogoflags-jp"></span> <span class="bogo-language-name"><a style="padding: 0; display:inline;"  rel="alternate" hreflang="ja" href="https://blog.shoheiaoki.com/" title="Japanese" class="current" aria-current="page">日本語</a></span></li>
</ul>
</div>

いい感じ