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The Apache HTTP Server is an open source web server by the Apache Software Foundation.

GMO Internet is a Japanese provider of internet services.

GMO Internet is a Japanese provider of internet services.

GMO Internet is a Japanese internet service provider.

GMO Internet is a Japanese internet service provider.

Let’s Encrypt is a free, automated, and open certificate authority provided by the Internet Security Research Group.

Embedded Cascading Style Sheets define a set of style rules in a <style> element within a web page.

Inline Cascading Style Sheets define style rules directly within an (X)HTML element using the style attribute.

HTML5 is the fifth revision of the HTML standard.

UTF-8 (8-bit Unicode Transformation Format) is a variable-length character encoding for Unicode, which is backwards compatible with ASCII.

JPEG (Joint Photographic Experts Group) is a lossy compression method suitable to store photographic images.

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