@media (min-width: 701px) {
.boseki_sp_only {
	display:none;
}
}

@media (max-width: 700px) {
.boseki_pc_only {
	display:none;
}
}

.youtube {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  margin-bottom:30px;
}
.youtube iframe {
  position: absolute;
  top: 0;
  right: 0;
  width: 100% !important;
  height: 100% !important;
}