#viz {
  display: block;
    overflow: auto;
    position: absolute;
}

#viz:after {
clear: both;
    content: "";
    display: table;
}

img {
  opacity: 0;
    position: absolute;
    top: 0px;
    left: 0px;
  margin: 8px;
}

#i1 {
  opacity: 1;
    position: static;
}

#controls {
    margin-left: 10px;
    height: 25px;
    text-align: center;
    width: 900px;
}

#controls div {
    display: inline-block;
}

#slider-container {
    font-size: 0.7em;
    font-family: sans-serif;
}

#slider-container .ui-slider-handle {
    top: -0.4em;
}

#slider {
    width: 300px;
    height: 5px;
    margin-left: 10px;
    margin-right: 10px;
}

button {
    padding: 5px;
    margin: 5px;
}

button#prev {
    margin-left: 40px;
}