HTML Style Guide

Always Declare Document Type
```
<DOCTYPE html>
```
Always Use Lowercase Element Names
Close ALL HTML Elements

This normally does not include empty elements. However, XML and XHTML do require you to use the closing slash /.
Always Use Lowercase Attribute Names
Always Quote Attribute Values
Always Specify alt, width, and height for Images
Do NOT Insert Spaces Between Equal Signs
NEVER Skip the title Element
ALWAYS Include the lang Attribute

This goes inside the <html> tag. It assists search engines and browsers.
Declare Char Encoding ASAP
```
<meta charset="UTF-8">
```

Set the Viewport in All Pages

<meta name="viewport" content="width=device-width, initial-scale=1.0">