<!DOCTYPE html>
<html>
<head>
<style>
  #wrapper {
    border: 1px solid red;
    margin: 20px 0;
    width: 200px;
  }

  #p {
    background: #EEE;
    border-right: 1px solid green;
    margin: 0;
    margin-right: 32px;
    padding-left: 30px;
  }

  #float  {
    float: left;
    display: inline-block;
    width: 25px;
    height: 25px;
    background-color: green;
    margin-left: -30px;
  }

  #prtl {
    background: #EEE;
    border-left: 1px solid green;
    margin: 0;
    margin-left: 32px;
    padding-right: 30px;
  }

  #floatrtl  {
    float: right;
    display: inline-block;
    width: 25px;
    height: 25px;
    background-color: green;
    margin-right: -30px;
  }
</style>
</head>
<body>
  <h2>The text should not overflow the green border.</h2>
   <div id="wrapper">
    <p id="p">
      <span id="float"></span>
      no sea takimata sanctus estestest Lorem ipsum dolor sit amet.
    </p>
  </div>
  
  <h2>The text should not overflow the green border.</h2>
   <div id="wrapper" style="direction:rtl">
    <p id="prtl">
      <span id="floatrtl"></span>
      no sea takimata sanctus estestest Lorem ipsum dolor sit amet.
    </p>
  </div>
</body>
</html>