body {
   background-color: gray;
   font-family: Arial, sans-serif;
}

#controls {
  border: 1px solid black;
  text-align: center;
  position:fixed;
  top:0;
  left:0;
  width:100%;
  margin:0 auto;
  padding-bottom: 10px;
  z-index: 1;
}

#slideshow { 
    position: relative; 
    width: 300px; 
    height: 510px; 
    padding: 10px; 
    //top: 150px;
}

#slideshow > div { 
    position: absolute; 
    text-align: center;
    overflow: visible;
    display: none;
}

#slideshow > div > img {
    border: 2px solid white;
    box-shadow: 0 0 20px white; 
}