:-moz-only-whitespace

The :-moz-only-whitespace CSS pseudo-class matches elements that only contains text nodes that only contain whitespace. (This includes elements with empty text nodes and elements with no child nodes.)

Syntax

Syntax not found in DB!

Examples

HTML

<div> </div>

CSS

:root {
  overflow: hidden;
  max-width: 100vw;
  max-height: 100vh;
}

div {
  background-color: #ccc;
  box-sizing: border-box;
  height: 100vh;
  min-height: 16px;
  min-height: 1rem;
}

div {
  border: 4px solid red;
}

:-moz-only-whitespace {
  border-color: lime;
}

Result

Specifications

Briefly defined as :blank in Selectors Level 4, but then the functionality was merged into :empty and :blank redefined to mean empty <input>.

Browser compatibility

See also

• :blank
• :empty