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              <h2>Using rems for line-height in pseudo element content collapses the line-height in IE 9 and 10</h2>
<div data-label="This text should appear inside the div, wrapped on a few lines, but IE 9 and 10 will collapse the content"></div>

<div class="no-rem" data-label="This text will appear correctly inside the div, wrapped on a few lines, as we used em instead of rem"></div>
              [data-label] {
  border: 1px solid;
  display: inline-block;
  padding: 5px;
  vertical-align: top;
  width: 200px;

[data-label]:before {
  content: attr(data-label);
  display: block;
  line-height: 2rem;

[data-label].no-rem:before {
  line-height: 2em;
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