.container 
{
  
position: relative;
  
width: 500px;
  
height: 800px;
  
margin: 0 auto;

}



.container img 
{
  
position: absolute;
  
left: 0;
  
top: 0;
  
width: 100%;
  
height: 100%;
  
object-fit: cover;

}



.container button 
{
  
position: absolute;
  
top: 50%;
  
transform: translateY(-50%);
  
width: 40px;
  
height: 30px;
  
font-size: 16px;

}



.container .prev 
{
  
left: 10px;

}



.container .next 
{
  
right: 10px;

}