.block-spacer {
  display: block;
}
.block-spacer.block-spacer--section {
  height: 50px;
}
.block-spacer.block-spacer--section2 {
  height: 120px;
}
@media screen and (max-width: 767px) {
  .block-spacer.block-spacer--section {
    height: 30px;
  }
  .block-spacer.block-spacer--section2 {
    height: 70px;
  }
}

.edit-post-visual-editor__content-area .block-spacer {
  background-color: #eeeeee;
  position: relative;
}
.edit-post-visual-editor__content-area .block-spacer:before {
  content: '※スペース※';
  width: 100%;
  height: 100%;
  position: absolute;
  display: -webkit-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-justify-content: center;
  -ms-justify-content: center;
  justify-content: center;
  -webkit-align-items: center;
  -ms-align-items: center;
  align-items: center;
}