erpnext/website/page/blog/blog.html

<div class="layout_wrapper">
	<div class="web-content" id="content-blog">
		<h1>Blog</h1>
		<br>
		<div class="web-main-section">
		</div>
		<div class="web-side-section">
			<h4>Get Updates</h4>
			<input name="blog-subscribe">
			<button class="btn" id="blog-subscribe">Subscribe</button>
		</div>
		<div style="clear: both"></div>
	</div>
</div>