用一个 div 覆盖 2 个 div (ASP.NET Core)

<section id="about" class="container content-section text-center">
    <div class="row">
        <div class="col-lg-8 col-lg-offset-2">
            <h2>About Grayscale</h2>
            <p>
               
            </p>
            <p>
              
            </p>
            <p>Н</p>
        </div>
       
</section>
<!-- Download Section -->
<section id="download" class="content-section text-center">
    <div class="download-section"> 
        <div class="container">
            <div>
                
               <div style="width:30%;height:530px;float:left;border-style:solid;border-width:15px;border-color:#42DCA3; margin-right: 20px">
                   <p style="padding-top:10px;font-size:30px;"><b>VR</b></p>
                   <p style="color:#FFD700;font-size:35px;"><b><strike>3600  грн </strike></b></p>
                   <p style="color:black;font-size:28px;"><b>2600  грн до 24.06.17 </b></p>
                   <div style="border-bottom: 1px solid #42DCA3;border-top: 1px solid #42DCA3;padding: 20px 0;margin-bottom: 20px;font-size:20px;">
                         6 недель, 12 занятий,36 часов<br>
                         + практика с HTC Vive<br>
                         + создание 3D объектов<br>
                         + создание ролика с камерой 360°
                   </div>
                   <div style="font-size:20px;">Старт 01.07.17</div>
                   <div style="margin: 0 auto;padding-top:20px;">
                <button class="btn btn-default btn-lg" data-toggle="modal" data-target="#myModal">Оставить заявку</button>
                </div>
               </div>
              <h2 style="text-align: center; padding-top: 100px;">Программа обучения VR</h2>
<div style="padding: 10px;">01</br>02</br>03</br>04</br>05</br></div>
            </div>
           
        </div>
    </div>

.top-div {
  width: 400px;
  height: 200px;
  background: url('https://photos.smugmug.com/Stock-images/Westward-Expansion-Photos/gettysburg-battlefield-photos/i-S8rSqgg/1/70e2c6c8/S/Gettysburg%20Battlefield%20Photos-S.jpg');
}
.bottom-div {
  width: 400px;
  height: 400px;
  background: Orange;
  box-sizing: border-box;
  padding: 10px 10px 10px 200px;
}
.overlay-holder {
  position: relative;
}
.overlay {
  position: absolute;
  top: 100px;
  left: 10px;
  width: 180px;
  background: LightBlue;
  box-sizing: border-box;
  padding: 10px;
}

<div class="overlay-holder">
  <div class="overlay">
    This text is in the overlay<br/>
    This text is in the overlay<br/>
    This text is in the overlay<br/>
    This text is in the overlay<br/>
    This text is in the overlay<br/>
    This text is in the overlay<br/>
    This text is in the overlay<br/>
    This text is in the overlay<br/>
    This text is in the overlay<br/>
  </div>
</div>
<div class="top-div"></div>
<div class="bottom-div">
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</div>