message: Fixed: row height calculation bug.
diff: :root {
  --component-explorer-column-min-count: 1;
  - --component-explorer-row-height: 100px;
  }
  .Explorer {
  }
  &__droparea {
  + @mixin hover {
  + border-color: var(--color-base-blue);
  + }
  +
  @apply --layout-column-center-center;
  position: relative;
  height: 192px;
  padding: 12px;
  margin: 0 24px 24px;
  + cursor: pointer;
  background-color: rgba(72, 72, 72, 0.03);
  border: 2px dashed var(--color-base-gray-secondary);
  border-radius: 6px;
  &--active {
  border-color: var(--color-base-blue);
  }
  +
  + &--mini {
  + height: 80px;
  + }
  }
  &__dragHandler {
  &__list {
  display: grid;
  - margin-bottom: 24px;
  + padding-bottom: 24px;
  grid-gap: 2px;
  grid-template-columns: repeat(var(--component-explorer-column-min-count), minmax(100px, auto)) repeat(auto-fit, minmax(100px, auto));
  - grid-auto-rows: var(--component-explorer-row-height);
  + grid-auto-rows: auto;
  }
  &__item {
  @mixin hover {
  opacity: 0.8;
  }
  + position: relative;
  cursor: pointer;
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  +
  + &::before {
  + display: block;
  + padding-top: 100%;
  + content: "";
  + }
  }
  &__error {
  