.form-row { margin-bottom: 1.8rem; }
.form-row.mb0 { margin-bottom: 0; }
.form-row.mb0-5 { margin-bottom: 0.5rem; }
.form-row.mb1 { margin-bottom:  1rem; }
.dtmf-options .form-row { margin-bottom: 0.7rem; }