.bg01 {
  text-align: center;
  margin: 0 auto;
  background-color: #E2E2E2;
  padding: 2% 0;
}

.bg02 {
  text-align: center;
  margin: 0 auto;
  background-color: #202020;
  padding: 2% 0;
}

.bg03 {
  text-align: center;
  margin: 0 auto;
  background: linear-gradient(to bottom, #202020 0%, #202020 50%, #E2E2E2 50%, #E2E2E2 100%);
}

.bg04 {
  text-align: center;
  margin: 0 auto;
  background: linear-gradient(to bottom, #E2E2E2 0%, #E2E2E2 50%, #202020 50%, #202020 100%);
}

.bg05 {
  text-align: center;
  margin: 0 auto;
  background-color: #202020;
  padding-top: 3%;
}

.btn-field {
  position: relative;
  width: 100%;
  display: flex;
  flex-flow: row wrap;
  justify-content: space-between;
  padding: 0 15px;
}

.btn-img {
  width: 30%;
}

.caution {
  border: #FF0000 1px solid;
  padding: 5px;
  color: #FF0000;
}