<!DOCTYPE html>
<!--
 | When the "text-overflow" property is set to "ellipsis" an ellipsis
 | character is rendered to represent clipped inline content.
 | "For the ellipsis..., implementations must hide characters and
 | atomic inline-level elements at the applicable edge(s) of the
 | line as necessary to fit the ellipsis/string." While the first
 | atomic inline-level element is clipped, the second must be ellipsed.
 | Because an atomic inline-level element is treated as a single opaque
 | box by the inline box, its margins should be treated the same as
 | its content.
 |   https://www.w3.org/TR/css3-ui/#propdef-text-overflow
 |   https://www.w3.org/TR/CSS21/visuren.html#inline-boxes
 -->
<html>
<head>
  <meta charset="utf-8">
  <style>
    body {
      margin: 0px;
      font-family: Roboto;
      font-size: 20px;
    }
    #div1 {
      white-space: nowrap;
      width: 180px;
      overflow: hidden;
      text-overflow: ellipsis;
      border: 1px solid #000000;
    }
    video {
      background-color: #888888;
    }
    span {
      background-color: #888888;
      display: inline-block;
    }
    #span1 {
      width: 60px;
    }
    #span2 {
      width: 70px;
      margin: 20px 40px 20px 40px;
    }
    #video1 {
      width: 60px;
      height: 30px;
    }
    #video2 {
      width: 70px;
      height: 30px;
      margin: 20px 40px 20px 40px;
    }
  </style>
</head>
<body>
  <div>
    <div dir="ltr" id="div1">
      <span id="span1">Span1</span>
      <span id="span2">Span2</span>
    </div>
    <div dir="ltr" id="div1">
      <video id="video1"></video>
      <video id="video2"></video>
    </div>
    <div dir="rtl" id="div1">
      <span id="span1">Span1</span>
      <span id="span2">Span2</span>
    </div>
    <div dir="rtl" id="div1">
      <video id="video1"></video>
      <video id="video2"></video>
    </div>
  </div>
</body>
</html>