fieldset {
  display: block;
  margin-inline-start: 2px;
  margin-inline-end: 2px;
  padding-block-start: 0.35em;
  padding-inline-start: 0.75em;
  padding-inline-end: 0.75em;
  padding-block-end: 0.625em;
  min-inline-size: min-content;
  border-width: 2px;
  border-style: groove;
  border-color: threedface;
  border-image: initial;
}

legend {
  width: unset;
}

.btn-default {
    color: #333;
    background-color: #fff;
    border-color: #ccc;
}

.btn-default.active {
    color: #333;
    background-color: #e6e6e6;
    border-color: #adadad
}