Learn HTML & CSS: Part I

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  <title>Jetsetter Concierge Travel Planning</title>
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        <h1 id="header-text"> Vlasis</h1>
      <h1>Travel Like Never Before</h1>
      <h2>Whether you're looking for adventure or luxury, let us help you plan your perfect getaway.</h2>
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    <h4>Proud Partner of Am South Airlines <img src="https://s3.amazonaws.com/codecademy-content/courses/web-101/unit-5/htmlcss1-img_amsoair.png" id="aa-logo" width="150px"></h4>
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    <h3>Why You Should Choose Jetsetter Concierge Travel Planning</h3>
    <p>With over 25 years of experience in concierge, high-end travel planning, we'll provide you with the highest quality services. Every vacation is unique, custom, and tailored to your tastes.</p>

    
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        <img src="https://s3.amazonaws.com/codecademy-content/courses/web-101/unit-5/htmlcss1-img_diamond.png" width="60px">
        <h2>Unique</h2>
        <p>We don't do standardized packages because we know everyone wants something different. Every vacation will be uniquely customized to your tastes.</p>
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        <img src="https://s3.amazonaws.com/codecademy-content/courses/web-101/unit-5/htmlcss1-img_diamond.png" width="60px">
        <h2>Experienced</h2>
        <p>Our quarter century of experience in travel planning combines local knowledge with international taste. You'll be amazed at what we can provide!</p>
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        <img src="https://s3.amazonaws.com/codecademy-content/courses/web-101/unit-5/htmlcss1-img_diamond.png" width="60px">
        <h2>Luxury</h2>
        <p>We understand that you expect the world of your vacation - Jetsetter can provide once in a lifetime experiences at top of the line quality.</p>
      
  
  
  
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 <div  > <!--Add an id to this div -->
       <h1 id="header-text"> Vlasis</h1>

you don’t need any extra header element for it. you have to add the id for <div> not for <h1> .

see the comment next to <div> tag

Thank you very much!