For people like me who code their templates in regular HTML/CSS first and are too lazy to convert to [newclass] tag/proboards format. Have fun, try not to die.
Note: false positives may exist for warnings. It's your job to remove stuff.
HTML
CSS
.example {background: #fff;padding:5px;border:1px solid;} .example b {color:#f00;}
google fonts:
result
submit