.debug-area {
  font-size: 0.7rem;
  border: 1px solid gray;
  background-color: #fafafa;
  padding-left: 1rem;
  padding-top: 1.75rem;
  position: relative;
}

.debug-area:before {
  display:block;
  position: absolute;
  top: 0;
  left: 0;
  content: "デバッグ情報";
  padding: 0.25rem;
  background-color: gray;
  color: #fff;
}


.debug-area table {
  margin-top: 2em;
}

.debug-area th {
  background-color: #ccc;
}

.debug-area tr:nth-of-type(2n) {
  background-color: #f0f0f0;
}

.debug-area th,
.debug-area td {
  text-align: center;
}