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HTML

            
              <div class="container">
</div>

<div class="slider">
</div>

<div class="container">
</div>

            
          
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CSS

            
              .container {
  width: 996px;
  height:125px;
  background:lightgrey;
  margin:0 auto;
}

.slider {
  height:125px;
  background:#bada55;
}
            
          
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JS

            
              
            
          
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