css/css-overflow/text-overflow-ellipsis-editing-input.html

<!doctype html>
<title>CSS Overflow Test: text-overflow:ellipsis not rendered while editing</title>
<link rel="help" href="https://drafts.csswg.org/css-overflow/#ellipsis-interaction">
<link rel="match" href="text-overflow-ellipsis-editing-input-ref.html">
<!-- The specification says it "may" render ellipsis as clip while editing, but
     all current engines do for input elements. -->
<style>
  input {
    all: initial;
    width: 100px;
    text-overflow: ellipsis;
    caret-color: transparent;
  }
</style>
<p>You should not see an ellipsis for the text below.</p>
<input id="input_element" value="xxxxxxxxxxxxxxxxxxxx">
<script>
  input_element.offsetTop;
  input_element.focus();
</script>