npm-polymer-elements/prism/plugins/show-invisibles/prism-show-invisibles.css

Polymer Elements package for npm

.token.tab:not(:empty):before,
.token.cr:before,
.token.lf:before {
	color: hsl(24, 20%, 85%);
}

.token.tab:not(:empty):before {
    content: '\21E5';
}

.token.cr:before {
    content: '\240D';
}

.token.crlf:before {
    content: '\240D\240A';
}
.token.lf:before {
    content: '\240A';
}