h1 {color:blue;}

#div {
padding: 20px;
margin: 10px;  
}

#parentdiv {
width: 500px;
background-color: #e487bf;
margin: 30px;
height:120px;
float: left;  
}

#box-one {
width: 4rem;
background-color: #87e4ac;
margin: 10px;
padding: 10px;
float: left;  
}

#box-two {
width: 4rem;
background: #87e3e4;
margin: 10px;
padding: 10px;
float: left;  
}

#box-three {
width: 4rem;
background-color: #e4e387;
margin: 10px;
padding: 10px;  
float: left;
}