When a user copies and pastes an internal link inside the BO rich-text editor, the resulting link element loses its `href` attribute. Only the `data-ametys-href` attribute is preserved.

As a consequence, the link is matched by the following CSS rule:

.ametys-cms-content a:not([href]):not([tabindex]):not([role="slider"]),
.mceContentBody a:not([href]):not([tabindex]):not([role="slider"]) {
  position: relative;
  top: -160px;
  display: block;
}

This rule incorrectly applies to copy-pasted internal links, shifting them visually by `-160px` and breaking the layout.