.lineNumber{counter-increment:line;position:relative;display:block;margin-left:2.5em;padding-left:1em;border-left:1px solid #212529;line-height:1.15rem;min-height:1.15rem}.lineNumber:before{content:"  " counter(line);position:absolute;margin-left:-3.5em;color:#212529}.lineNumber:nth-child(n+10):before{content:" " counter(line)}.lineNumber:nth-child(n+100):before{content:counter(line)}