.robots-txt-preview{margin:0;list-style-position:inside;background:#f9f9f9;padding:10px;list-style-type:none;white-space:nowrap;counter-reset:yourVariableName}.robots-txt-preview li{font-family:"Courier New";color:#2e2f38}.robots-txt-preview li:before{counter-increment:yourVariableName;content:counter(yourVariableName) " ";color:#959595;display:inline-block;min-width:54px}