@biscuitpants/codemirror-spell-checker/dist/spell-checker.min.css

Tweaked and updated spell checker for CodeMirror

/**
 * @biscuitpants/codemirror-spell-checker v0.0.12
 * Copyright 
 * @link https://github.com/biscuitpants/codemirror-spell-checker
 * @license MIT
 */
.CodeMirror .cm-spell-error:not(.cm-url):not(.cm-comment):not(.cm-tag):not(.cm-word){background:rgba(255,0,0,.15)}