circle inside square

by tammasr

HTML

<div class="square">
  <div class="circle">
    
  </div>
</div>
<div class="square">
  <div class="circle">
    
  </div>
</div>

CSS

.square {
  width: 100px;
  height: 100px;
  background-color: grey;
  position: relative;
  float:left;
  margin: 5px;
}

.square .circle {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: red;
  top: 25%;
  left: 25%;
  position: absolute;
}