.calculator-page {
    margin: 100px auto 80px;
    padding-inline: 16px;
    max-width: 880px;
    p {
      margin-block: 20px;
    }
    input, select {
        border: 1px solid var(--gray);
    }
}
.input_area .title {
  background-color: #39c;
  font-size: 20px;
  padding: 5px 10px;
  color: #fff;
  margin-bottom: 20px;
  text-align: center;
}
.input_area label {
  display: inline-block;
  position: relative;
  width: 80px;
  margin: 0 auto 15px;
  font-size: 12px;
}
.input_area label::after {
  position: absolute;
  bottom: 15px;
  right: 8px;
  font-family: "Font Awesome 5 Free";
  content: '\f078';
  color: #999;
  font-size: 20px;
  font-weight: 900;
  pointer-events: none;
  line-height: 1;
}
.input_area select {
  display: inline-block;
  width: 100%;
  height: 50px;
  font-size: 28px;
  margin-top: 5px;
  padding-left: 10px;
  background-color: #fff;
  cursor: pointer;
  -moz-appearance: none;
  -webkit-appearance: none;
}
.input_area select::-ms-expand {
  display: none;
}
.input_area dt,
.input_area dd {
  display: inline-block;
  font-size: 20px;
}
.input_area dt {
  margin-right: 10px;
  font-weight: bold;
}

.flex-box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  font-size: 20px;
  @media screen and (min-width: 768px) {
    flex-direction: row;
    gap: 30px;
  }
}

.current-size-search-button {
  display: block;
  margin-inline: auto;
  margin-top: 10px;
  margin-bottom: 30px;
  border: 1px solid #333;
  padding: 1em 2em;
  width: fit-content;
  line-height: 1;
  border-radius: 9999px;
  font-size: 16px;
  font-weight: bold;
  text-decoration: none !important;
  color: #333 !important;
  transition: opacity 0.3s;
  &:hover {
    opacity: 0.7;
  }
  &.-disabled {
    pointer-events: none;
    opacity: 0.3;
  }
  &::after {
    font-family: 'Font Awesome 5 Free';
    content: '\f054';
    font-weight: 900;
    margin-left: 0.5em;
  }
}

.result_area {
  font-size: 0;
}
.result_area .title {
  background-color: #069;
  font-size: 20px;
  padding: 5px 10px;
  color: #fff;
  margin-bottom: 20px;
  text-align: center;
}
.result_area .speed {
  display: flex;
  gap: 10px;
}
.result_area label {
  font-size: 16px;
}
.result_area label span {
  font-size: 20px;
}
.result_area input[type="text"]{
  width: 80px;
  height: 50px;
  font-size: 28px;
  text-align: center;
  margin-top: 5px;
  margin-right: 10px;
}
.result_area .height {
  white-space: nowrap;
}
.result_area dt,
.result_area dd {
  display: inline-block;
}
.result_area .height dt {
  margin-right: 10px;
  font-size: 20px;
  font-weight: bold;
}