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jQuery: The Write Less, Do More, JavaScript Library.

iOS Safari instructions for mobile web apps

This site uses the viewport meta tag which means the content may be optimized for mobile content.

Websites using some type of cookie consent system

nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.

Content Security Policy is best used as defense-in-depth, to reduce the harm caused by content injection attacks.

Websites using https protocol.

The DOCTYPE is a required preamble for HTML5 websites.

UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.

Meta descriptions are HTML attributes that provide concise explanations of the contents of web pages. Meta descriptions are commonly used on search engine result pages (SERPs) to display preview snippets for a given page.

Chrome for Android, since version 39 supports the "theme-color" meta tag to allow websites control the background color of the tab's UI header.