When you work with WordPress themes to create web designs, you use basic HTML, combined with CSS styling, to accomplish the formatting and styling you desire for your website. Here's a rundown of some basic HTML and CSS markup.

Name Description HTML Markup Example CSS Example
Indicates the header portion of a web page that contains invisible, but vital, information about the page, such as the title and keywords. <head>
<title>My Web Site</title>
Defines the content area of your web page that's visible in your visitor's browser window. <body>
<p>This is my content</p>
body {background: white; color:black}
<a href="..">
Inserts a hyperlink for either a word or an image. <a href="http://google.com">Google</a> a {color:blue}
<img src=".."> Inserts an image in a web page. <img src="http://yourdomain.com/image.jpg" /> img {padding 4px; border: 1px solid silver}
Defines groupings of text in paragraphs. <p>This text is treated as a paragraph</p> p {margin: 1.2em; line-height: 1.2em; color: red}
Defines a first-level heading, usually a title or menu heading. You can also use h2, h3, h4, h5, and h6. <h1>This is a title</h1> h1 {font-size: 18px; color: blue; margin: 10px 0;}