What is: CSS


CSS or Cascading Style Sheets is a style sheet language used to define visual appearance and formatting of HTML documents. WordPress themes use CSS and HTML to output the data generated by WordPress. Every WordPress theme contains a style.css file which has style rules to define the formatting of pages generated by WordPress.

CSS is very simple to use and easy to learn. There are many websites publishing CSS tutorials for beginners that can help a new WordPress user get started. However, since it is very simple to use, a lot of WordPress users can understand the basics by simply looking at their WordPress theme’s style.css file.


  body {   font-size:14px;  color: #444;  background-color:#FFFFFF;   }     h1 {   font-size:18px;  text-transform:uppercase;  }    .post-title {   font-size: 16px;   color: #4C0000;  font-weight:normal;  }     

HTML elements can be styled directly in CSS. Designers also use identifiers and classes to define different sections that can be styled in CSS. This helps them use different styles for same HTML elements on a web page but in different sections. For example, an h1 element for the blog title in the header section of a page can be styled differently than another h1 element in the post area of the same page.


    <div id="header">    <h1 class="blog-title">  <a href="<?php bloginfo('url'); ?>" title="<?php bloginfo('name'); ?>"><?php bloginfo('name'); ?></a>  </h1>    </div>    

The HTML shown above contains an identifier named ‘header’ and a class called ‘blog-title’. These sections can be styled in CSS.


  #header {   background-color:#4C0000;  height:120px;  width:100%;  padding:20px;   }     h1.blog-title a {   font-color:#FFFFFF;   font-size:16px;  font-family: Georgia, "Times New Roman", serif;   text-decoration:none;  }   

Additional Reading

  • Theme
  • How to Style the WordPress Comment Form (Ultimate Guide)
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