#button{
  position: absolute;
  left: 50%;
  top:  50%;
  cursor: pointer;
}
body{
  background-color: bisque;
}
#eind{
  width: 200px;
  height: 200px;
  background-color: white;
  display: flex;
  justify-self: center;
 margin-top: 300px;
  display: none;
  text-align: center;
}
.buttoneind a{
  text-decoration: none;
}