body{
  background-color:#1d1f20;
}
body, html {
    height: 100%;
    width: 100%;
    margin: 0;
    padding: 0;
}
#container{
  max-width:900px;
  width:100%;
  overflow:hidden; 
  position: absolute;
  top: 50%;
  left: 50%;
  margin-right: -50%;
  transform: translate(-50%, -50%);
}