Web development Here you will be able to learn about important web development topics, and how to develop your own web application from scratch. Creating Your Own Custom Error Pages How to create your own custom error pages using htaccess or PHP.Trailing slashes in URLs When trailing slashes matters, and when they Dont. This article is about trailing slashes in URLs.How to Block or 404 out your Index Preventing access to index.php to avoid duplicate content.How to use Lets Encrypt to Enable HTTPS for Your Website How to freely, and easily enable HTTPS for your website.Absolute and Relative Paths How to write paths, aka URLs, in HTML and CSS. This article deals with both absolute and relative paths.CSS Media Queries Media queries can be used to control the behavior of a page layout in a variety of window sizes and resolutions. Length units in HTML and CSS How to use the different units of measurement in HTML and CSS.Why I Avoid Nested HTML Sections About the styling problems of nested HTML sections.