html, body {
  height:100vw;
}

.full-height {
  height:100vw;
}




#cgallery {
    position: relative;
    border-spacing: 10px;
    margin:5vw auto;
    padding: 0px 0px;
    background-color: #EEEEEE;
    width:100vw;
    border: 1px solid;
}