キクタロー

<p>セパレータ</p>
<p><span class="embed-block zenn-embedded zenn-embedded-card"><iframe id="zenn-embedded__22543aa5a0169" src="https://embed.zenn.studio/card#zenn-embedded__22543aa5a0169" data-content="https%3A%2F%2Fstackoverflow.com%2Fquestions%2F10206252%2Fhtml-emails-hr-styling-issue" frameborder="0" scrolling="no" loading="lazy"></iframe></span><a href="https://stackoverflow.com/questions/10206252/html-emails-hr-styling-issue" style="display:none" target="_blank" rel="nofollow noopener noreferrer">https://stackoverflow.com/questions/10206252/html-emails-hr-styling-issue</a></p>
