/*#default-div
{
 background: blue; 
}

#fixed-div
{
background-color: green;
  position: fixed;
}

body
{
height: 2000px;
}*/

#parent-div
{
  position: relative;
 background:orange;
  height: 1500px;
}
#default-div
{
 background: blue; 
}
#sticky-div
{
 background: green;
  position: sticky;
  top:10px;
}