WordPress is a content management system.
It has two main concepts,
Theme – made up of many parts that give a look, shape and feel to a website
Template – a shape of a page or output from the system, there can be many templates in a theme
WordPress themes are found in the following folder:
WordPress comes with a variety of templates, it is also possible to download free and paid themes. We can make our own themes.
The wordpress page is made up of the following sections:
By default, WordPress comes with a style.css stylesheet. This stylesheet is designed to reduce inconsistencies between different browsers. It is based on work by Eric Meyer. The style.css stylesheet is generally over-ridden by CSS sheets within themes.
It is relatively easy to develop new Themes for WordPress, there are explanations and standards for developers in both developer.wordpress.com and codex.wordpress.com.