div
{
  padding: 20px;
  margin: 5px;
  float: left;
}
#parent-div
{
  width: 500px;
  background: #BDBAC2;
}
#box-one
{
  background:#F7AAEE;
  width: 70px;
}
#box-two
{
  background:#AAF1F7;
  width:70px;
}
#box-three
{
  background:#C4AAF7;
  width: 70px;
}