<!DOCTYPE html>
<!--
 | Wrapping is only performed at an allowed break point, called a soft wrap
 | opportunity. In most writing systems, in the absence of hyphenation a soft
 | wrap opportunity occurs only at word boundaries.
 |   https://www.w3.org/TR/css3-text/#soft-wrap-opportunity
 |   https://www.w3.org/TR/css-text-3/#line-break-details
 |
 | When the leading edge margin, border or padding of a span overflows the line,
 | the line should still evaluate wrapping before the span.
 -->
<html>
<head>
  <style>
    body {
      margin: 0px;
      font-family: Roboto;
      font-size: 20px;
    }
    .containing-block {
      background-color: #03a9f4;
      width: 106px;
    }
    .colored-padding {
      background-color: #e1bee7;
      padding: 0px 0px 0px 100px;
    }
    video {
      background-color: #f50057;
      width: 80px;
      height: 20px;
    }
    .inline-block {
      background-color: #aeea00;
      display: inline-block;
      width: 80px;
      height: 20px;
    }
  </style>
</head>
<body>
  <div class="containing-block">
    <div>abcdefghij<span class="colored-padding">test</span></div>
    <div>abcdefghij<span class="colored-padding"><span>test</span>test</span></div>
    <div>abcde fghij <span class="colored-padding">test</span></div>
    <div>abcde fghij <span class="colored-padding"><span>test</span>test</span></div>
    <div>abcde fghij<span class="colored-padding"><video></video></span></div>
    <div>abcde fghij<span class="colored-padding"><span><video></video></span></span></div>
    <div>abcde fghij<span class="colored-padding"><span class="inline-block"></span></span></div>
    <div>abcde fghij<span class="colored-padding"><span><span class="inline-block"></span></span></span></div>
  </div>
</body>
</html>