/* Placeholders */
.webform-submission-form ::placeholder {
  opacity: 0.4;
}

/* Firefox */
.webform-submission-form :-moz-placeholder {
  opacity: 0.4;
}
.webform-submission-form ::-moz-placeholder {
  opacity: 0.4;
}

/* Radios + checkboxes labels */
.webform-submission-form
input[type="checkbox"] + label,
.webform-submission-form
input[type="radio"] + label {
  opacity: 0.4;
}