<div class="container">
Container Div <div class="container__inner">This div move to 20 px from top and element has position: relative;
</div>
</div>
.container {
height:200px;
background:red;
}
.container__inner{
position: relative;
background:green;
top:20px;
}
This Pen doesn't use any external CSS resources.
This Pen doesn't use any external JavaScript resources.