in the webassist/forms/fd_joe_100percent.css file, add width: 100%; to the form.Joe_100Percent div.formGroup and form.Joe_100Percent div.fieldGroup selectors
form.Joe_100Percent div.formGroup {
display: inline;
float: left;
width: 100%;
}
form.Joe_100Percent div.fieldGroup {
display: block;
float: left;
padding-left: 0;
padding-right: 0;
position: relative;
width: 100%;
}