Tell search engines and social media what your site is about with meta tags. Add a favicon for the browser tab. Validate your HTML with the W3C Validator.
<head>
<!-- SEO & Social -->
<meta charset="UTF-8">
<meta name="description" content="Your café description">
<meta name="viewport" content="width=device-width">
<title>My Coffee Shop</title>
<!-- Favicon -->
<link rel="icon" href="/favicon.ico">
</head>
Run your HTML through validator.w3.org to catch errors before deployment.
Add a 32x32 or 16x16 .ico file for the browser tab icon.