I am see four <labels> for each checkbox, all with the same id. This is invalid HTML as well as not being ADA-compliant.  I believe that Marketo should not rely on site implementors to correct these problems.   <label for="OptInProduction" id="LblOptInProduction" class="mktoLabel mktoHasWidth" style="width: 300px;"></label> <div class="mktoAsterix"> <label for="OptInProduction" id="LblOptInProduction" class="mktoLabel mktoHasWidth" style="width: 300px;">*</label> </div> <label for="OptInProduction" id="LblOptInProduction" class="mktoLabel mktoHasWidth" style="width: 300px;">Tick to Opt-in and receive information from Xerox</label> <div class="mktoGutter mktoHasWidth" style="width: 10px;"></div> <div class="mktoLogicalField mktoCheckboxList mktoHasWidth" style="width: 150px;"> <input name="OptInProduction" id="OptInProduction" type="checkbox" value="yes" aria-labelledby="LblOptInProduction" class="mktoField" /> <label for="OptInProduction" id="LblOptInProduction"></label> </div>   ... View more