my code is here but it is not work!

index7th.html

  {
    color: violet;
  }
  h1 {
    color: red;
    font-size: 2em;
    font-weight: normal;
  }
  h2 {
    color: green;
    font-size: 2px;
  }
  p {
    color: yellowgreen;
    font-weight: bold;
    font-size: 2rem;
    text-decoration: underline;
  }
  span {
    color: black;
    font-weight: bold;
    direction: rtl;
  }



<h1>
  Lorem ipsum dolor sit
</h1>
<p>
  Lorem, ipsum dolor sit
  sunt!
</p>
<h2>Hello Mahdi</h2>
<p>
  Lorem ipsum dolor, sit
  ?
</p>

  Lorem ipsum it is span dolor sit!

<p>
  Lorem ipsum dolor sit id.
</p>

  Lorem ipsum dolor sit?

<p>Lorem ipsum dolor sit, </p>
<h2>coding is cool</h2>
<p>
  Lorem ipsum dolor sit.
</p>

i try to change my code from ltr to rtl
it seems simple but i get trouble from this.
i think it is very simple to explain it into stack over flow but it is not simple it is gave me a notification “”.