main {
  position: absolute;
  height: 100vh;
  width: 100%;
  overflow: hidden;
}

body, html {
  height: 100vh;
  margin: 0px;
  padding: 0px;
}

#openseadragon1 {
  width: 100%;
  height: 100%;
  position: relative;
  background-color: #e3e3e3;
}