body {
  font-family: "Helvetica Neue", Arial, sans-serif;
  color: #464444;
  background-color: #efefef;
}
.wrap {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  justify-content: center;
  margin: 10px;
}

.panel {
  width: 280px;
  height: 500px;
  background: #fff;
  border: 4px solid #aaa7a7;
  box-shadow: 0 0 6px rgba(0,0,0,.15);
  padding: 16px;
}

.page-note {
  text-align: center;
  font-size: 18px;
  margin: 10px 0 14px;
}

.row-inline {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.num {
  width: 90px;
  font-size: 20px;
  padding: 2px 4px;
}

.unit {
  height: 28px;
}

.unit-label {
  font-size: 18px;
}

.fieldset {
  border: 2px solid #bdbdbd;
  padding: 20px;
  margin: 12px 0;
}

.btn {
  display: block;
  width: 90%;
  margin: auto;
  padding: 6px;
  background: #d7d4d4;
  color: #000;
  border: 2px solid #767474;
  font-weight: 400;
  font-size: 20px;
  text-align: center;
  cursor: pointer;
}

.out {
  min-height: 1.2em;
  margin: 0;
}

.sr-only {
  position: absolute;
  left: -9999px;
}