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    body {
      margin: 0px;
      font-family: Roboto, Noto Naskh Arabic UI;
      font-size: 30px;
      color: #fff;
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      width: 500px;
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    <div>ط1<span>لتدلت</span>دتد</div>
    <div>ط1<span>2لتدل3<span>تدلت4</span>دل5ل6تد</span>لتد</div>
    <div>ط1a<span>لتد2ل<span>3تد</span>لتb4د<span>ل5ت6دcل</span>7تد8dل</span>تد</div>
    <div>يa<span>bطا32لت</span>دcde</div>
    <div><span>ط1لتدلنشاabطتد2cdيل</span></div>
    <div>abط1<span>2لتالت34</span>دلتcd</div>
    <div>a<span>b<span>12دل</span>تد3<span>4</span>cd</span></div>
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