Contributing

Code Style

Use spaces for indentation,
Order properties alphabetically

HTML

Include alt attribute for all images
Include title attribute for all links
Close all your tags properly

CSS

Try to use classes instead of IDs unless things are absolutely unique
One selector per line
Support IE 9 and above
Use rem over em or px
Capitalize hexadecimal
Breaking lines should be 1px solid #ccc
Maintain contrast to WCAG AA on normal text, WCAG AAA on large text.
Use colors from this palette.
We also use #fff, #ccc, and #111 for main body text.

.class {
	color: #4C1161;
	font-size: 1.1rem;
}
.second-class,
.third-class {
	background-color: white;
}

Markdown

Do not use fancy quotes, dashes, and such; the Markdown processor will handle that.