Sure, here’s a very simple example of what a restaurant website’s HTML and CSS may look like. It will have a Header, a Menu section, and a Contact section:

HTML Code:

“`html

“`

CSS Code (styles.css):

“`css
body {
font-family: Arial, sans-serif;
}

header {
background-color: #f8f9fa;
text-align: center;
padding: 20px;
}

#menu, #contact {
margin: 50px;
padding: 20px;
background-color: #f2f3f4;
border-radius: 5px;