.entry-content.wp-block-post-content {
    margin-block-start: 0 !important;
}

.position-parent {
  position: relative;
}

.position-child,
.block-editor-block-list__layout .block-editor-block-list__block.position-child {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
}

.wp-block-navigation-item > a, .wp-block-navigation .wp-block-navigation-item__label {
font-weight: 300 !important;
}