.h5p-questionnaire-footer {
  background: #1F1F1F;
  padding: 0.7em 1.2em;
  display: inline-block;
  width: 100%;
  box-sizing: border-box;
  border: 1px solid #404040;
}
.h5p-questionnaire-footer .h5p-questionnaire-button.next {
  float: right;
}
.h5p-questionnaire-footer .h5p-questionnaire-button.previous {
  float: left;
}