*{
margin: 0;
}
html, body {
height: 100%;
background-color: black;
}
#displaydiv{
height: 70%;
max-height:70%;
width:100%;
color: white;
text-align: center;
}
#displaydiv>span>img{
margin-left:auto;
margin-right:auto;
height:95%;
text-align: center;
}
#thumbsdiv{
height: 30%;
min-height: 30%;
max-height: 30%;
overflow-y: scroll;
}
ul{
list-style: none;
}
.thumbnail{
float: left;
margin: auto;
cursor:pointer;
}
.thumbnail > img{
height:100px;
}